A webcast is a live or recorded transmission of audio-visual content delivered over the internet to reach a broad audience. Unlike traditional broadcasting, webcasting lets organisations, educators, and individuals share information in real time or on demand, on any connected device.
Webcasting is now a standard tool for businesses, educational institutions, healthcare providers, and the entertainment industry. It works for product launches, corporate events, online training, and live concerts alike.
Table of contents
- What is a webcast?
- How does webcasting work?
- Types of webcasts
- Benefits of webcasting
- How to webcast successfully
- Real-world applications of webcasting
- The future of webcasting
- Frequently asked questions (FAQs)
- Where to go from here
The global live streaming market, which includes webcasting, was valued at USD 108.7 billion in 2025 and is projected to reach USD 687.2 billion by 2034. That growth reflects a compound annual growth rate of 22.05 per cent, driven by demand for real-time content, mobile access, and hybrid events.
As hybrid work grows and audiences expect flexible access to content, it helps to understand what webcasting is, how it differs from traditional broadcasting, and how to use it well. This guide explains how a webcast works, walks through practical examples, and shows you how to webcast successfully.
What is a webcast?
A webcast delivers audio or video content over the internet to a broad audience at once, with no geographic limits or the technical constraints of traditional broadcasting. Where a television or radio broadcaster needs a licensed transmission network, anyone with the right platform and a decent connection can reach thousands of people in real time or on demand.
Unlike video conferencing, which is built for two-way conversation in smaller groups, webcasting focuses on structured, one-to-many content delivery. Organisations use webcasts for corporate updates, leadership addresses, training, product launches, and global events where consistent messaging and wide reach matter most.
Webcasts can be streamed live for real-time engagement, or made available on demand to suit different time zones and schedules. Modern platforms add interactive features like polling, Q&A, and analytics, making sessions more interactive and measurable.
What is a live webcast?
A live webcast is a real-time transmission of an event streamed over the internet, so audiences experience it as it happens with no pre-recording. Live webcasts work well for annual general meetings, keynotes, product launches, and concerts, where timely participation is the point. Platforms support live interaction through polls, Q&A, and chat to keep the audience involved.
Webcast vs webinar, live stream and broadcast
These terms overlap, so it helps to separate them. A webinar is smaller and interactive, with real-time discussion between presenters and participants, whereas a webcast is one-to-many and largely view-only. Live streaming is the underlying technology that sends video over the internet in real time; a webcast is a structured event that often uses live streaming to reach its audience. Traditional broadcasting sends content over radio or television networks, while webcasting uses the internet. For a deeper comparison, see our guide on the difference between a webinar and a webcast.
How does webcasting work?
A webcast works by capturing audio and video, encoding it into a digital stream, and delivering that stream over the internet to viewers' devices, usually through a streaming server or content delivery network (CDN). Viewers watch in a web browser or app, with no special software to install.
For a live webcast, the content is encoded in real time and sent out with only a short delay, known as latency. On a typical live webcast that delay can be anything from a few seconds up to about half a minute, so design interactive Q&A with that lag in mind. For an on-demand webcast, the content is recorded, stored, and streamed whenever a viewer presses play. A typical setup includes a camera and microphone or capture software, an encoder, and a webcasting platform. Many platforms can also restream to destinations like YouTube or custom RTMP endpoints to extend reach to very large audiences.
Types of webcasts
Webcasts generally fall into three formats, plus a split between internal and external audiences:
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Live webcasts: streamed in real time, ideal for events where immediacy and interaction matter.
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On-demand webcasts: recorded once and watched whenever the viewer chooses, useful for training and content libraries.
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Simulated live (simulive) webcasts: pre-recorded content scheduled to play at a set time as if it were live, often with a live Q&A alongside it.
Webcasts are also either internal, such as company town halls and employee training, or external, such as public product launches and marketing events.
Benefits of webcasting
Webcasting helps organisations communicate widely, flexibly, and efficiently. The main benefits include:
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Global reach and accessibility: webcasting removes geographic barriers, so you can connect with dispersed audiences in real time or on demand, across any device or time zone. Adding synchronised captions makes content accessible to deaf and hard-of-hearing viewers. For many public-sector and corporate events, captions are increasingly required by accessibility laws and standards such as WCAG 2.1 AA.
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Cost and resource efficiency: compared with in-person events, webcasting cuts the cost of venue hire, travel, and logistics, while still delivering a professional experience.
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Audience engagement: live polls, Q&A, and real-time chat turn passive viewing into active participation and improve how much people remember.
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Measurable insights: analytics tools track viewer behaviour, engagement, and content performance, so you can refine your approach and prove event ROI.
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Flexibility for live and on-demand viewing: whether streamed live or watched later, webcasts fit different schedules. On-demand recordings keep working long after the event ends, extending the audience well beyond those who attended live.
How to webcast successfully
Now that you know why organisations webcast, here is how they do it well. Good webcasting comes down to careful planning, the right technology, and genuine audience engagement.
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Define clear objectives:
Start by deciding what you want to achieve. Are you educating, promoting a product, sharing corporate updates, or building community? Clear goals shape the format, content, and delivery of your webcast.
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Choose the right platform:
Look for scalability, strong security and access controls, audience-interaction tools, and detailed analytics. Browser-based platforms remove the need for attendees to download anything, which lifts turnout. If you are weighing up options, our comparison of the best webcasting software breaks down eight platforms side by side.
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Plan compelling content:
Create structured, relevant content that holds attention throughout. A clear script, strong visuals, and logical segments guide viewers through the session. Well-planned content is central to both live and on-demand webcasts.
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Test your technology:
Before going live, run a full technical rehearsal. Check cameras, microphones, lighting, streaming stability, and backup systems. A clean technical setup reduces the risk of disruption on the day.
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Promote your webcast:
Build anticipation by promoting your event through email, social media, partners, and your website. Using an email finder tool can help you identify and connect with the people who would benefit most, expanding your audience with targeted outreach. Always give people a simple registration link and clear viewing instructions. If you plan to record the session, tell registrants up front and capture their consent, since recording attendees' video, audio, and chat carries data-protection obligations in regions like the EU.
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Encourage real-time engagement:
Engagement is what sets strong webcasts apart. Use live polls, Q&A, and chat to keep energy up during the event. Platforms with built-in engagement tools make interactive sessions much easier to run.
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Review analytics and improve:
Afterwards, look at attendance, engagement rates, viewing duration, and drop-off points. Detailed reports show what worked and what to fix, so each webcast is better than the last.
Real-world applications of webcasting
Webcasting is now used across many industries. Practical examples include:
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Corporate webcasting: companies use webcasting for internal training, executive communications, shareholder meetings, and global product launches, reaching wide audiences without the logistics.
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Education: institutions deliver lectures, virtual open days, and graduation ceremonies by webcast, extending access to learning beyond the campus.
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Healthcare: providers host continuing medical education (CME) sessions, webinars, and public health briefings through webcasting platforms.
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Entertainment and media: the sector uses webcasting for live music, film premieres, and behind-the-scenes content, creating new revenue and building fan engagement.
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Government and public sector: public bodies stream press briefings, policy announcements, and legislative sessions to stay transparent and engage citizens.
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Non-profit organisations: charities and NGOs use cost-effective webcasting for virtual fundraising, donor briefings, and awareness campaigns, reaching a global audience without high costs.
The future of webcasting
Webcasting is becoming more interactive and more central to how organisations communicate. Platforms are already incorporating AI-driven analytics that personalise viewer experiences and adjust content delivery based on engagement patterns. Looking further ahead, augmented reality (AR) and virtual reality (VR) are beginning to change how presenters connect with audiences: from VR-enhanced training environments to product launches where AR demonstrates features in real time.
Faster networks will support higher-definition webcasts with lower latency, even for very large audiences. On-demand viewing will keep growing, and hybrid events that blend live and pre-recorded content will become standard practice across business, education, healthcare, and entertainment.
Webcasting is no longer a niche option; it is a core part of global communication. Organisations that invest in modern platforms and clear webcasting strategies will be best placed to inform and engage the audiences that matter to them.
Frequently asked questions (FAQs)
What is the difference between a webcast and a webinar?
A webcast is usually one-way communication streamed to a large audience, while a webinar is interactive and involves real-time discussion between presenters and a smaller group. For a full breakdown, see our guide on the difference between a webinar and a webcast.
Is a webcast the same as live streaming?
Not quite. Live streaming is the underlying technology that delivers video over the internet in real time, while a webcast is a structured, one-to-many event that often uses live streaming to reach its audience. In short, a webcast is a type of live stream with a defined purpose and format.
Is webcasting live or pre-recorded?
Webcasting can be either. Live webcasts happen in real time, while on-demand webcasts are recorded and made available for viewing later. Many organisations offer both: a live event followed by an on-demand recording.
How much does webcasting cost?
The cost of webcasting depends on the platform, audience size, features, and production quality. Many platforms offer flexible pricing based on the number of viewers or events, so costs range from free tools to enterprise packages.
What equipment do I need to host a webcast?
At a minimum, you need a reliable internet connection, a good-quality camera and microphone, and access to a webcasting platform. Larger productions may add encoders, capture software, lighting, and a backup connection.
Is webcasting secure?
Reputable webcasting platforms protect content and audience data with encryption, access controls, and password or token-based entry. If you handle sensitive data, look for providers that are transparent about where data is stored and how it is processed.
Can webcasting support hybrid events?
Yes. Webcasting suits hybrid events well: you can stream live sessions to a remote audience while an in-person audience attends on site, then publish the recording on demand for anyone who missed it.
Where to go from here
Webcasting is one of the most flexible ways to address a large audience, live or on demand. If you are still deciding on a format, our comparison of the best webcasting software and our guide to the difference between a webinar and a webcast will help you choose the right setup for your next event.
