Designed for leaders across Business Services / Professional Services, this glossary explains operational, production, commercial, safety, technology, and measurement terminology used in live and hybrid events. It helps executives, organizers, venue teams, exhibitors, suppliers, and advisers navigate the Events, Trade Shows & Experiential Practice with a shared working vocabulary.
A B C D E F G H I J L M N O P Q R S T U V W X
| A | |
| ADA | Americans with Disabilities Act: United States civil-rights legislation requiring accessible facilities, services, and communications. Event planning implications include registration, routes, seating, restrooms, stages, websites, and auxiliary aids. |
| ADMEI | Association of Destination Management Executives International: A global association serving destination management companies and professionals through standards, education, accreditation, and professional certification. |
| AED | Automated External Defibrillator: A portable device that analyzes heart rhythm and can deliver a shock during sudden cardiac arrest. Its placement, accessibility, and trained operators are important elements of event medical planning. |
| AEO | Association of Event Organisers: A United Kingdom trade association representing companies that create and operate exhibitions, conferences, consumer events, and related experiences. |
| AEV | Association of Event Venues: A United Kingdom association representing exhibition, conference, and event venues and supporting operational standards, research, and industry advocacy. |
| AHJ | Authority Having Jurisdiction: The public agency or designated official responsible for interpreting and enforcing applicable codes. Approval may be required for occupancy, temporary structures, fire safety, electrical systems, and special-event permits. |
| AIPC | Association Internationale des Palais de Congrès (International Association of Convention Centres): A global association for convention and exhibition centers that develops operational guidance, professional education, benchmarking, and venue-management resources. |
| ALD | Assistive Listening Device: Equipment that transmits amplified or clearer audio directly to an attendee with hearing loss. Devices may use radio-frequency, infrared, induction-loop, or digital technology. |
| ANSI | American National Standards Institute: The organization that coordinates voluntary consensus standards in the United States. Accredited entertainment-technology standards address subjects such as rigging, temporary structures, lighting, and show-control systems. |
| AoIP | Audio over Internet Protocol: The transport of digital audio across standard network infrastructure. It enables flexible routing among consoles, stage boxes, processors, recording systems, and distributed event spaces. |
| APEX | Accepted Practices Exchange: An Events Industry Council initiative that developed shared terminology, specifications, templates, and accepted practices to improve communication among planners, venues, and suppliers. |
| AR | Augmented Reality: Technology that overlays digital content on a user’s view of the physical environment. It supports interactive exhibits, product visualization, wayfinding, gamification, and branded experiences. |
| ASCAP | American Society of Composers, Authors and Publishers: A United States performing-rights organization that licenses public performances of music. Organizers and venues may require appropriate licensing when recorded or live music is used. |
| ASL | American Sign Language: A visual language used by many Deaf and hard-of-hearing people in the United States and parts of Canada. Qualified interpreters may be required for accessible sessions, performances, and attendee services. |
| ATA Carnet | Admission Temporaire/Temporary Admission Carnet: An international customs document allowing eligible professional equipment, exhibition goods, and commercial samples to enter participating countries temporarily without ordinary duties and taxes. |
| ATP | Average Ticket Price: Ticket revenue divided by the number of paid tickets. It helps producers evaluate pricing strategy, ticket mix, discounting, and revenue performance. |
| AV | Audiovisual: The equipment and services used to capture, process, display, amplify, record, and stream sound and images. Typical scope includes projection, displays, cameras, lighting, microphones, loudspeakers, control, and technical labor. |
| AVIXA | Audiovisual and Integrated Experience Association: A global professional association and standards body for the audiovisual industry. Its training, certifications, and technical standards are widely relevant to event-production teams and suppliers. |
| B | |
| B2B | Business-to-Business: Events in which organizations market, sell, source, or exchange knowledge with other organizations. Trade shows, hosted-buyer programs, and professional conferences commonly use this operating model. |
| B2C | Business-to-Consumer: Events designed primarily for direct engagement with individual consumers. Consumer shows, festivals, launches, and brand activations frequently use this model. |
| BCP | Business Continuity Plan: A documented approach for maintaining or restoring critical event operations after disruption. It may address venue loss, severe weather, supplier failure, cyber incidents, public-health events, and communications. |
| BEO | Banquet Event Order: A detailed venue document specifying room setup, timing, menus, service, staffing, audiovisual needs, and billing instructions for a catered function. It is a core operational reference for planners and venue departments. |
| BLE | Bluetooth Low Energy: A short-range wireless technology used by badges, beacons, mobile applications, and sensors. Event applications include proximity engagement, indoor location, access control, and attendee-flow analysis. |
| BMI | Broadcast Music, Inc.: A United States performing-rights organization that licenses public performances of music. Event producers and venues must account for music rights when programming entertainment or recorded music. |
| BOL | Bill of Lading: A shipping document describing freight, routing, carrier, consignee, and handling instructions. Exhibitors and contractors use it to tender, track, deliver, and release show materials. |
| BOH | Back of House: Nonpublic operational areas supporting an event, such as kitchens, loading docks, storage, green rooms, production offices, and backstage corridors. Access and traffic flows are normally restricted. |
| C | |
| CAD | Computer-Aided Design: Software-assisted creation of precise floor plans, scenic drawings, booth layouts, rigging plots, and technical schematics. Drawings support approvals, fabrication, space allocation, and installation. |
| CART | Communication Access Realtime Translation: Live conversion of spoken language into text by a trained captioner or supported system. It improves access for Deaf and hard-of-hearing attendees during sessions and broadcasts. |
| CCPA | California Consumer Privacy Act: A California privacy law granting consumers rights over certain personal information. Registration, mobile applications, lead retrieval, and attendee analytics may trigger notice, access, deletion, and opt-out obligations. |
| CDM | Construction (Design and Management) Regulations 2015: United Kingdom regulations governing health and safety in construction work. Temporary event structures, exhibition builds, and complex production installations may fall within their duties. |
| CEIR | Center for Exhibition Industry Research: A research organization that produces data and analysis on exhibition attendance, organizer performance, exhibitor behavior, and industry economics. |
| CEM | Certified in Exhibition Management: A professional designation administered by the International Association of Exhibitions and Events. Its curriculum covers exhibition operations, sales, marketing, finance, risk, and strategic management. |
| CGL | Commercial General Liability: Insurance covering specified third-party bodily injury, property damage, and related liabilities. Venues and organizers commonly require exhibitors, contractors, and suppliers to carry minimum limits. |
| CME | Continuing Medical Education: Accredited educational activity that helps physicians maintain competence and meet professional requirements. Medical congresses must manage accreditation, content independence, disclosures, and attendance records carefully. |
| CMM | Certificate in Meeting Management: An advanced professional program focused on business strategy, leadership, and management for experienced meeting and event leaders. |
| CMP | Certified Meeting Professional: A globally recognized credential administered by the Events Industry Council. It validates knowledge across meeting design, site management, budgeting, risk, and event operations. |
| CMP | Complete Meeting Package: A bundled conference-center price covering a defined combination of meeting space, food and beverage, audiovisual services, guest rooms, and related amenities. The contents and pricing basis must be confirmed contractually. |
| CMP-HC | Certified Meeting Professional—Healthcare: A healthcare-focused subspecialty for credentialed meeting professionals. It addresses regulations and compliance considerations affecting medical meetings and interactions with healthcare professionals. |
| COI | Certificate of Insurance: Evidence summarizing an insured party’s policies, limits, and coverage dates. Organizers and venues collect it to verify contractual insurance requirements before access or installation. |
| CPCE | Certified Professional in Catering and Events: A professional credential administered by the National Association for Catering and Events. It assesses knowledge of catering services, event management, beverage operations, accounting, and risk. |
| CPD | Continuing Professional Development: Structured learning that maintains or advances professional competence. Conferences offering credits need reliable attendance tracking, learning objectives, assessment, and documentation. |
| CPL | Cost per Lead: Event-related spending divided by the number of leads generated. The metric is most useful when lead qualification criteria and included costs are defined consistently. |
| CSEP | Certified Special Events Professional: A professional designation administered by the International Live Events Association. It recognizes knowledge and experience in producing special and live events. |
| CSM | Convention Services Manager: A venue or hotel professional who coordinates operational delivery after contracting. Responsibilities often include function details, space setup, departmental communication, and on-site issue resolution. |
| CTS | Certified Technology Specialist: An audiovisual credential administered by the Audiovisual and Integrated Experience Association. It demonstrates foundational competence in designing, installing, operating, and servicing audiovisual solutions. |
| CTSM | Certified Trade Show Marketer: A professional designation focused on exhibit and event marketing strategy, measurement, planning, operations, and program management. |
| CVB | Convention and Visitors Bureau: A destination organization that helps planners identify venues, lodging, local suppliers, attractions, and public resources. Many organizations using this traditional title now operate as destination organizations. |
| CWT | Hundredweight: A freight-pricing unit equal to 100 pounds in customary United States trade-show usage. General service contractors often quote material-handling charges per unit, subject to minimums. |
| D | |
| dBA | A-Weighted Decibel: A sound-level measurement adjusted to approximate human hearing sensitivity. It is used to monitor amplified sound, occupational exposure, neighborhood impact, and permit compliance. |
| DDR | Day Delegate Rate: A per-person meeting package commonly used by conference venues, especially in the United Kingdom and Europe. It usually bundles meeting space, refreshments, lunch, and standard equipment for a day event. |
| DES | Digital Event Strategist: A professional certification covering the strategy, production, monetization, technology, and measurement of virtual and hybrid events. |
| DLP | Digital Light Processing: A projection technology using microscopic mirrors to create images. Brightness, resolution, lensing, screen size, and ambient light determine its suitability for an event environment. |
| DMC | Destination Management Company: A local specialist providing services such as transportation, tours, activities, décor, entertainment, staffing, and off-site event production within a destination. |
| DMCP | Destination Management Certified Professional: A credential recognizing professional knowledge and experience in destination management services, program design, operations, sales, and risk management. |
| DMO | Destination Management Organization: An organization coordinating the visitor economy, stakeholder collaboration, destination stewardship, and long-term experience development. The management emphasis extends beyond promotion alone. |
| DMO | Destination Marketing Organization: An organization promoting a city, region, or country and supporting planners with destination information, venue sourcing, site visits, and attendance-building resources. |
| DMX512 | Digital Multiplex 512: A standardized digital-control protocol used for theatrical lighting, effects, and related equipment. A single universe carries up to 512 control channels. |
| DT | Double Time: A premium labor rate equal to twice the standard hourly rate. Trade-show and production labor rules specify when it applies, often based on hours, holidays, or local agreements. |
| E | |
| EAC | Exhibitor-Appointed Contractor: A contractor selected by an exhibitor rather than the show’s official provider to perform booth installation, dismantling, audiovisual, or other services. Advance authorization, insurance, and work-rule compliance are normally required. |
| EAP | Emergency Action Plan: A documented plan defining responsibilities and procedures for foreseeable emergencies. It typically covers communications, evacuation, sheltering, medical response, command structure, and coordination with public authorities. |
| EDPA | Experiential Designers and Producers Association: An industry association for companies and professionals that design, build, transport, install, and manage exhibits and experiential environments. |
| EIA | Events Industry Alliance: A United Kingdom alliance representing event organizers, venues, and suppliers through its constituent trade associations. It supports research, policy engagement, and industry advocacy. |
| EIC | Events Industry Council: A federation of meetings and events organizations that administers professional credentials, standards, research, and industry-wide initiatives. |
| EIC SES | Events Industry Council Sustainable Event Standards: A framework for assessing and certifying environmental and social practices across event organizers and suppliers. It addresses areas such as climate action, materials, sourcing, accessibility, and community impact. |
| EMECA | European Major Exhibition Centres Association: An association representing major European exhibition venues and facilitating benchmarking, knowledge exchange, and policy engagement. |
| EMS | Emergency Medical Services: The system of medical responders, equipment, transport, and clinical protocols supporting urgent care. Event coverage levels are determined through risk assessment, attendance, activities, and local requirements. |
| EMS | Event Management System: Software used to manage functions such as registration, scheduling, venue booking, resource allocation, communications, floor plans, and reporting. The term may refer to a planner platform or a venue’s internal operating system. |
| EMT | Emergency Medical Technician: A trained responder who provides prehospital assessment and emergency care. Staffing requirements vary by jurisdiction, crowd profile, event activity, duration, and access to ambulance transport. |
| EOI | Expression of Interest: A preliminary submission indicating an organization’s interest and qualifications before a formal proposal. It is commonly used when selecting destinations, venues, producers, or host partners. |
| ERP | Emergency Response Plan: A coordinated framework for responding to incidents that threaten people, property, operations, or reputation. It assigns command, communication, escalation, and recovery responsibilities. |
| ESCA | Exhibition Services & Contractors Association: A trade association representing service contractors and suppliers involved in producing exhibitions and events, including logistics, installation, technology, and floor operations. |
| ESM | Exhibitor Services Manual: The principal operating guide containing show rules, deadlines, order forms, shipping instructions, approved suppliers, safety requirements, and venue policies for exhibitors. |
| ESSA | Event Supplier and Services Association: A United Kingdom trade body representing contractors and suppliers that provide design, production, logistics, technology, and support services to events. |
| ESTA | Entertainment Services and Technology Association: An industry association and accredited standards developer serving entertainment-technology professionals. Its standards address rigging, control systems, lighting, temporary structures, and technical safety. |
| F | |
| F&B | Food and Beverage: Catering, bar, refreshment, and related service operations. Contracts commonly specify menus, guarantees, service charges, taxes, minimum spending, dietary needs, and concession rights. |
| FAM | Familiarization Trip: A hosted destination or venue visit designed to give qualified planners direct experience of facilities, suppliers, attractions, and logistics before sourcing future business. |
| FCC | Federal Communications Commission: The United States regulator for radio-frequency communications. Event-production teams must use compliant wireless microphones, intercoms, and transmitters and avoid unauthorized frequencies or interference. |
| FICP | Financial & Insurance Conference Professionals: A professional association serving meeting planners and hospitality partners working with financial-services and insurance organizations. |
| FOC | Free of Charge: A notation indicating that a room, service, ticket, upgrade, or item is provided without a direct charge. Contracts should define any conditions, ratios, taxes, or service fees that still apply. |
| FOH | Front of House: Public-facing areas and operations such as entrances, registration, lobbies, seating, guest services, and audience circulation. In production usage, it can also identify the main sound and lighting control position. |
| FR | Flame Retardant: A material property or treatment intended to reduce ignition or flame spread. Drapery, scenery, decorations, and booth materials may require test documentation or certificates acceptable to fire officials. |
| G | |
| GA | General Admission: A ticket or access category without a specifically assigned seat or premium entitlement. Capacity, queuing, entry controls, and viewing areas must be planned accordingly. |
| GBAC | Global Biorisk Advisory Council: A division of ISSA that provides guidance, training, and accreditation concerning infectious-disease prevention, cleaning, disinfection, and outbreak response in venues and facilities. |
| GDPR | General Data Protection Regulation: European Union data-protection legislation governing the collection and use of personal data. Registration, profiling, lead sharing, photography, mobile applications, and international data transfers require appropriate controls. |
| GDS-Index | Global Destination Sustainability Index: A benchmarking program that evaluates the sustainability performance of destinations and their tourism and events ecosystems. Planners may use its results during destination sourcing and reporting. |
| GFCI | Ground-Fault Circuit Interrupter: A protective device that disconnects power when it detects leakage to ground. Temporary power, outdoor installations, catering equipment, and wet locations may require this protection. |
| GHG | Greenhouse Gas: A gas that traps heat in the atmosphere. Event inventories commonly estimate emissions from attendee travel, freight, energy, accommodation, food, materials, and waste. |
| GSC | General Service Contractor: The primary contractor appointed by a trade-show organizer to provide services such as floor marking, drayage, furnishings, signage, installation labor, and exhibitor support. |
| GSF | Gross Square Feet: The total area occupied by an exhibition footprint, generally including booths, aisles, and designated show areas. It supports venue planning and comparison with net sellable space. |
| H | |
| H&S | Health and Safety: The management of risks affecting workers, attendees, exhibitors, performers, and the public. Event programs cover build and strike, crowd movement, temporary structures, equipment, fire, weather, and emergency response. |
| HACCP | Hazard Analysis and Critical Control Points: A preventive food-safety system that identifies hazards and controls critical stages in food handling. It is relevant to catering preparation, transport, storage, service temperatures, and allergen controls. |
| HCEA | Healthcare Convention & Exhibitors Association: An association serving professionals involved in healthcare exhibitions, medical meetings, exhibit programs, and related compliance-sensitive engagement. |
| HDMI | High-Definition Multimedia Interface: A digital connection carrying video, audio, and control data between compatible devices. Cable length, resolution, copy protection, and connector reliability matter in live production. |
| HLS | HTTP Live Streaming: An adaptive streaming protocol that divides video into segments delivered over standard web infrastructure. It is widely used to distribute virtual and hybrid event broadcasts to varied devices and connection speeds. |
| HOD | Head of Department: The senior person responsible for a production discipline such as audio, lighting, video, staging, or rigging. Department heads coordinate crews, equipment, safety, schedules, and technical delivery. |
| I | |
| I&D | Installation and Dismantling: The labor and services used to erect and remove exhibits, displays, and event structures. Costs depend on work rules, crew size, scheduling, jurisdiction, and design complexity. |
| IACC | International Association of Conference Centres: A global association for conference venues, meeting professionals, and related suppliers that promotes venue standards, education, and research. |
| IAEE | International Association of Exhibitions and Events: A global trade association serving exhibition organizers, venues, suppliers, and professionals through education, research, advocacy, and certification. |
| IAPCO | International Association of Professional Congress Organisers: A global association representing professional congress organizers and promoting quality standards, education, and accreditation in congress management. |
| IAVM | International Association of Venue Managers: A professional association serving managers of convention centers, arenas, stadiums, performing-arts venues, amphitheaters, and other public assembly facilities. |
| IBC | International Building Code: A model code governing building safety, occupancy, egress, structural requirements, and accessibility. Adopted versions influence room capacities, exhibit layouts, platforms, and temporary installations. |
| ICCA | International Congress and Convention Association: A global association and data provider focused on international association meetings. Its network supports destination, venue, supplier, and congress-organizer business development. |
| ICS | Incident Command System: A standardized structure for coordinating command, operations, planning, logistics, and communications during an incident. Large events may integrate their response teams with public agencies using this structure. |
| IFC | International Fire Code: A model code governing fire prevention, emergency access, egress, occupant loads, hazardous materials, and temporary activities. Locally adopted versions shape event permits and floor-plan approvals. |
| IFES | International Federation of Exhibition and Event Services: A global federation representing exhibition and event service providers, including design, production, logistics, and build companies. |
| IFR | Inherently Flame Retardant: A designation indicating that flame-retardant characteristics are intrinsic to a material rather than added as a temporary surface treatment. Authorities may still require valid test documentation. |
| ILEA | International Live Events Association: A professional association serving producers, designers, caterers, technical suppliers, venues, and other specialists involved in live events. |
| IMAG | Image Magnification: Live camera coverage displayed on large screens so attendees can see presenters or performers clearly. Camera placement, switching, latency, sightlines, and screen size affect the result. |
| IOR | Importer of Record: The party legally responsible for an international shipment’s customs entry, documentation, duties, taxes, and regulatory compliance. The role must be established before shipping exhibition materials across borders. |
| IP | International Protection (Ingress Protection): A rating system indicating an enclosure’s resistance to solid objects and water. Appropriate ratings are important for outdoor lighting, connectors, displays, and electrical equipment. |
| IP | Internet Protocol: The communications framework used to route data across networks. Modern production systems use networked audio, video, lighting, intercom, control, ticketing, and streaming devices. |
| IPAF | International Powered Access Federation: A global organization promoting safe use of powered access equipment and delivering recognized operator training for mobile elevating work platforms. |
| IRF | Incentive Research Foundation: A research organization studying incentive travel, recognition, rewards, and motivational experiences. Its findings inform program design, participant preferences, and business-case development. |
| ISO 20121 | International Organization for Standardization 20121—Event Sustainability Management Systems: An international management-system standard for improving the environmental, social, and economic impacts of events and event-related organizations. |
| ISO 25639 | International Organization for Standardization 25639—Exhibitions, Shows, Fairs and Conventions: An international standard covering industry vocabulary and statistical measurement procedures. It supports more consistent reporting and comparison of exhibition data. |
| J | |
| JHA | Job Hazard Analysis: A task-level assessment that identifies work steps, associated hazards, and required controls. It is particularly relevant to rigging, electrical work, lifting, machinery, and installation activities. |
| JSA | Job Safety Analysis: A structured review of how a task will be performed safely. Contractors use it to brief crews, select controls, and document safe methods during build, show, and strike periods. |
| L | |
| LCD | Liquid-Crystal Display: A flat-panel display technology used in monitors, televisions, signage, confidence screens, and interactive kiosks. Brightness, viewing angle, resolution, and size influence event suitability. |
| LD | Lighting Designer: The production specialist responsible for the artistic and technical lighting concept. The role covers fixture selection, positions, color, programming, power, rigging coordination, and show cues. |
| LED | Light-Emitting Diode: A semiconductor light source used in luminaires, video walls, signage, scenic elements, and displays. Event specifications consider brightness, pixel pitch, color performance, power, and viewing distance. |
| LOLER | Lifting Operations and Lifting Equipment Regulations 1998: United Kingdom regulations governing the planning, supervision, inspection, and safe use of lifting equipment. They are central to production rigging and suspended event loads. |
| LOS | Length of Stay: The number of nights a guest or group occupies accommodation. The measure affects room-block design, destination impact, inventory control, and hotel revenue negotiations. |
| LOS | Line of Sight: An unobstructed visual path between an attendee and a stage, screen, sign, or other focal point. Floor plans must account for columns, equipment, booth heights, and audience geometry. |
| LTL | Less-than-Truckload: Freight that shares trailer capacity with shipments from other customers. It can reduce transportation cost but may involve more handling, longer transit, and greater scheduling variability. |
| M | |
| M&E | Meetings and Events: A collective term for corporate meetings, conferences, exhibitions, incentives, and related gatherings. Organizations often use it when defining procurement, travel, policy, or operating responsibility. |
| MEWP | Mobile Elevating Work Platform: Powered equipment used to raise personnel to temporary work positions, including boom and scissor lifts. Trained operators, inspections, ground conditions, and fall-protection requirements are critical. |
| MHA | Material Handling Agreement: A trade-show document authorizing the movement and outbound shipment of exhibit freight. It identifies the exhibitor, carrier, destination, shipment details, and billing responsibility. |
| MHE | Material Handling Equipment: Equipment such as forklifts, pallet jacks, dollies, and cranes used to move freight and exhibit components. Only qualified personnel should operate controlled equipment in loading and show areas. |
| MICE | Meetings, Incentives, Conferences and Exhibitions: A widely used international term for the business-events sector. It encompasses corporate meetings, incentive travel, congresses, conventions, and trade exhibitions. |
| MPI | Meeting Professionals International: A global association serving meeting and event professionals through education, chapters, research, professional development, and industry networking. |
| MSDS | Material Safety Data Sheet: A legacy name for documentation describing chemical hazards, handling, storage, and emergency measures. Current regulations generally use standardized safety data sheets, but the older term remains common in event files. |
| N | |
| NACE | National Association for Catering and Events: A professional association serving catering and event professionals through education, certification, chapters, and industry resources. |
| NDI | Network Device Interface: A networked video technology used to send video, audio, metadata, and control across standard data networks. It supports distributed production and hybrid-event workflows. |
| NEC | National Electrical Code: The United States benchmark for safe electrical design and installation, published as National Fire Protection Association Standard 70. Locally adopted editions affect temporary power and production systems. |
| NFC | Near-Field Communication: A short-range wireless technology enabling compatible devices or credentials to exchange data at close proximity. Applications include contactless check-in, access control, payments, and information exchange. |
| NFPA | National Fire Protection Association: A standards organization publishing widely adopted codes for fire, electrical, life-safety, and hazardous-material risks. Several of its standards directly affect venues, exhibits, décor, and temporary production. |
| NFPA 101 | National Fire Protection Association 101—Life Safety Code: A code addressing occupant protection, means of egress, emergency features, and fire-related life safety. Adopted editions influence public-assembly layouts and operations. |
| NFPA 701 | National Fire Protection Association 701—Standard Methods of Fire Tests for Flame Propagation of Textiles and Films: A test standard commonly referenced for event drapery, banners, curtains, and decorative fabrics. Authorities may require certificates showing that materials passed an applicable test method. |
| NIMS | National Incident Management System: A United States framework for coordinating government, private-sector, and nonprofit incident response. Major events use its common terminology and command principles when working with public agencies. |
| NPS | Net Promoter Score: A loyalty measure based on respondents’ likelihood of recommending an experience. It is calculated by subtracting the percentage of detractors from the percentage of promoters. |
| NSF | Net Square Feet: The amount of exhibition floor space assigned or sold for booths, excluding aisles and common areas. It is a core measure of show scale, occupancy, pricing, and productivity. |
| O | |
| OSHA | Occupational Safety and Health Administration: The United States agency responsible for workplace safety and health regulation. Its requirements apply to many event build, production, warehousing, electrical, lifting, and dismantling activities. |
| OT | Overtime: A premium labor category applying outside defined straight-time conditions. Union rules, local practices, contracts, and work schedules determine the applicable rate and timing. |
| P | |
| PA | Public Address: A sound system used to distribute speech, music, announcements, or emergency messages to an audience. Coverage, intelligibility, volume, redundancy, and zoning are key design considerations. |
| PAVA | Public Address and Voice Alarm: An integrated system providing routine announcements and intelligible emergency instructions. It is commonly specified in large public venues, particularly in Europe and the United Kingdom. |
| PCI DSS | Payment Card Industry Data Security Standard: Security requirements for organizations that store, process, or transmit payment-card data. Registration, ticketing, onsite sales, and cashless payment providers must define and protect their respective responsibilities. |
| PCMA | Professional Convention Management Association: A global business-events association providing education, research, professional development, and resources for planners, suppliers, and event leaders. |
| PCO | Professional Congress Organizer: A specialist company managing congress functions such as registration, abstracts, speakers, sponsorship, exhibitions, logistics, budgeting, and delegate services. |
| PEO | Professional Exhibition Organizer: A company specializing in the commercial and operational management of exhibitions. It may own an event or operate it for an association, institution, or other owner. |
| PII | Personally Identifiable Information: Information that identifies or can reasonably be linked to an individual. Registration, badge, payment, lead-capture, travel, accessibility, and behavioral data require appropriate safeguards. |
| PLASA | Professional Lighting and Sound Association: A trade association serving entertainment-technology businesses and professionals. It supports technical standards, skills development, safety guidance, and industry representation. |
| PLI | Public Liability Insurance: Coverage for specified claims involving third-party injury or property damage, commonly required in the United Kingdom and other markets. Venues often set minimum limits for organizers and contractors. |
| PoE | Power over Ethernet: Technology that supplies electrical power and data over the same network cable. It can simplify deployment of cameras, access devices, intercoms, wireless access points, and digital signage. |
| POV | Privately Owned Vehicle: A personal vehicle used to deliver or collect exhibit materials. Shows may designate specific unloading areas, time limits, fees, or handling rules for this delivery method. |
| PPE | Personal Protective Equipment: Wearable equipment used to reduce exposure to workplace hazards, including hard hats, high-visibility clothing, gloves, eye protection, hearing protection, and fall-arrest equipment. |
| PRO | Performing Rights Organization: An organization that licenses public performances of copyrighted music and distributes royalties to rights holders. Event and venue agreements should clearly allocate music-licensing responsibility. |
| PRS | Performing Right Society: A United Kingdom music-rights organization whose repertoire is licensed for public performances and other uses. Live and recorded music at events may require the relevant permissions. |
| PTZ | Pan-Tilt-Zoom: A remotely controlled camera capable of horizontal movement, vertical movement, and optical zoom. It enables compact, repeatable coverage of sessions and hybrid broadcasts. |
| PUWER | Provision and Use of Work Equipment Regulations 1998: United Kingdom regulations requiring work equipment to be suitable, maintained, inspected, and operated by trained people. They apply to a broad range of event-production tools and machinery. |
| Q | |
| QR | Quick Response Code: A two-dimensional barcode readable by smartphones and scanners. Event uses include ticketing, check-in, lead retrieval, session access, contactless menus, wayfinding, and content delivery. |
| R | |
| RAMS | Risk Assessments and Method Statements: Documents explaining hazards, controls, responsibilities, and the safe sequence of work. They are widely required from production and exhibition contractors, particularly in the United Kingdom. |
| RCD | Residual Current Device: An electrical safety device that disconnects a circuit when leakage current is detected. It provides important protection for temporary, portable, and outdoor event-power systems. |
| RF | Radio Frequency: Electromagnetic frequencies used by wireless microphones, intercoms, communications, badges, and network devices. Coordination helps prevent interference and ensures regulatory compliance. |
| RFID | Radio-Frequency Identification: Technology using tags and readers to identify or track people and objects wirelessly. Applications include credentials, cashless payments, lead capture, inventory, and attendee-flow measurement. |
| RFP | Request for Proposal: A structured invitation asking venues or suppliers to propose a solution and commercial terms. Effective event requests define scope, dates, attendance, space, service levels, evaluation criteria, and contract requirements. |
| RIDDOR | Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013: United Kingdom regulations requiring specified workplace incidents to be formally reported. Event employers and contractors must understand which injuries and dangerous occurrences are reportable. |
| ROH | Run of House: A hotel-room allocation in which the property assigns available rooms within an agreed category rather than guaranteeing a specific room type or location. |
| ROI | Return on Investment: A measure comparing the financial value attributable to an event with its cost. Credible analysis requires agreed cost boundaries, attribution assumptions, time horizons, and outcome data. |
| ROO | Return on Objectives: Assessment of event performance against predefined nonfinancial or intermediate goals, such as learning, relationships, engagement, qualified leads, or behavioral change. |
| ROS | Run of Show: A time-sequenced operational document listing program segments, cues, speakers, media, transitions, staffing, and responsibilities. It aligns producers, stage managers, technicians, and presenters during execution. |
| RSVP | Répondez s’il vous plaît: A request for invitees to confirm whether they will attend. Response data supports capacity, catering guarantees, seating, security, transportation, and guest communications. |
| RTA | Real-Time Analyzer: A tool that displays the frequency content of an audio signal as it occurs. Sound engineers use it to tune systems, identify feedback, and diagnose room or equipment problems. |
| RTLS | Real-Time Location System: Technology that determines the location of tagged people or assets within a defined area. It can support equipment tracking, attendee-flow analysis, safety, and operational response. |
| RTMP | Real-Time Messaging Protocol: A protocol commonly used to send live audio and video from production encoders to streaming platforms or media servers. |
| S | |
| SDI | Serial Digital Interface: A professional video standard that carries uncompressed digital video over coaxial cable. It is widely used for cameras, switchers, recorders, routers, and display systems. |
| SDS | Safety Data Sheet: A standardized document describing a chemical product’s hazards, handling, storage, protective measures, and emergency actions. Event files may require these sheets for paints, adhesives, fuels, cleaning agents, and effects materials. |
| SEG | Silicone Edge Graphics: Fabric graphics finished with a silicone strip that fits into a frame channel. The system creates clean, tensioned displays and is common in modular exhibits and branded environments. |
| SISO | Society of Independent Show Organizers: An association serving for-profit companies that own, produce, and operate trade shows, conferences, and other business events. |
| SITE | Society for Incentive Travel Excellence: A global professional association focused on incentive travel and motivational experiences. It provides education, certification, research, and industry advocacy. |
| SMERF | Social, Military, Educational, Religious and Fraternal: A legacy hospitality and meetings-market category used to group certain association and social-event segments. It may still appear in venue sales, forecasting, and account classification. |
| SMPTE | Society of Motion Picture and Television Engineers: A standards organization for media and entertainment technology. Its specifications influence video formats, connectors, synchronization, timecode, transport, and production workflows. |
| SPL | Sound Pressure Level: A measure of acoustic pressure, normally expressed in decibels. Production teams monitor it for audience experience, speech intelligibility, exposure limits, and noise compliance. |
| SRO | Standing Room Only: A capacity or ticketing condition in which no seats remain or the designated audience area is intentionally standing. Occupancy, sightlines, barriers, and egress still require active control. |
| SRT | Secure Reliable Transport: An open-source video-transport protocol designed for reliable, encrypted contribution over unpredictable networks. It is used to connect remote speakers, production sites, and streaming workflows. |
| ST | Straight Time: The standard labor rate applying during defined regular working hours. Show schedules and service orders should account for transitions to overtime or double-time rates. |
| SWL | Safe Working Load: A legacy term for the maximum load considered safe for equipment under stated conditions. Modern rigging practice generally favors the manufacturer’s working load limit and engineered system calculations. |
| T | |
| TD | Technical Director: The senior production professional coordinating technical design and execution across audio, video, lighting, staging, rigging, power, and show control. |
| TDS | Temporary Demountable Structure: A structure assembled for limited-duration use, such as a stage, grandstand, tower, platform, tent, or scenic installation. Design, engineering, erection, inspection, weather limits, and dismantling require formal control. |
| TSE | Temporary Special Event: A regulatory classification used by many jurisdictions for short-duration public gatherings or installations. Permitting may address site plans, occupancy, fire safety, sanitation, traffic, sound, and emergency services. |
| TSNN | Trade Show News Network: An industry information platform providing trade-show news, event listings, venue resources, and market data for organizers, exhibitors, and suppliers. |
| TULIP | Tenants’ and Users’ Liability Insurance Policy: Short-term liability coverage designed for organizations or individuals using a venue. It can provide an insurance solution when a renter lacks an annual policy meeting venue requirements. |
| U | |
| UFI | Union des Foires Internationales (The Global Association of the Exhibition Industry): A worldwide association representing exhibition organizers, venues, associations, and service providers. It supports research, education, advocacy, and approved-event auditing. |
| UHF | Ultra High Frequency: A radio-frequency range widely used by professional wireless microphones, intercoms, and communications systems. Available spectrum and permitted equipment vary by country and location. |
| UPS | Uninterruptible Power Supply: A device providing short-term backup power and power conditioning when the main supply fails or fluctuates. It protects critical control, networking, registration, and broadcast systems. |
| V | |
| VHF | Very High Frequency: A radio-frequency range used by some wireless microphones, communications systems, and broadcast services. Frequency coordination and local licensing rules determine appropriate use. |
| VIP | Very Important Person: An attendee, speaker, sponsor, performer, official, or guest assigned enhanced access or service. Planning may include credentialing, security, transport, hospitality, seating, and protocol. |
| VOD | Video on Demand: Prerecorded or archived video made available for viewers to watch at a chosen time. Events use it for session replay, extended access, paid libraries, and post-event engagement. |
| VR | Virtual Reality: Technology that immerses a user in a computer-generated environment, usually through a headset. Event applications include simulations, demonstrations, training, entertainment, and experiential storytelling. |
| W | |
| WCAG | Web Content Accessibility Guidelines: International guidelines for making digital content more accessible to people with disabilities. They are relevant to event websites, registration systems, mobile applications, virtual platforms, documents, and recorded content. |
| WebRTC | Web Real-Time Communication: Browser-based technology enabling real-time audio, video, and data exchange without a separate plug-in. It supports virtual sessions, remote presenters, networking, and interactive event platforms. |
| WLL | Working Load Limit: The maximum load that a lifting component is designed to support under specified conditions. Rigging plans must respect the lowest applicable limit and account for system geometry and dynamic effects. |
| X | |
| XR | Extended Reality: An umbrella term covering augmented, virtual, and mixed-reality technologies. It is used for immersive activations, virtual production, product demonstrations, remote participation, and interactive environments. |