Here's the short version: a webinar is an interactive online seminar where the audience participates, a webcast is a one-to-many broadcast where the audience mostly watches, and a livestream is the underlying technology of sending live video over the internet — which powers both. If you're planning an event and vendors keep using these words interchangeably, this post will clear it up in about eight minutes.
I'm Mark, and our team produces all three formats for corporate clients every month. The labels matter less than the decisions behind them — but knowing the difference will save you from buying the wrong thing.
These three words overlap because the underlying plumbing is identical: live video, encoded and delivered over the internet. The differences are about audience size, interaction, and intent — not technology.
Platforms muddy it further. Zoom sells "webinars," LinkedIn calls everything a "live event," and enterprise platforms sell "webcasting." When a vendor quotes you, they may mean something very different from what your team pictured. So let's define each one the way production people actually use them.
A webinar is an online seminar built around interaction. Think training sessions, product demos, lead-generation presentations, and Q&A-driven sessions with tens to a few hundred attendees.
The defining feature is two-way participation: registrants can ask questions, answer polls, raise hands, and sometimes come on camera. Webinars usually live on platforms built for that interaction — Zoom Webinars, GoToWebinar, Teams — and success is measured in engagement and follow-up, not just view counts. Production can be as simple as a presenter and slides, or as polished as a multi-camera studio session with a producer managing the queue of questions.
A webcast is a one-to-many broadcast. Think quarterly earnings calls, executive town halls, press announcements, and large-scale product launches — events where hundreds or thousands of people watch and only a handful present.
Interaction is limited by design: maybe moderated Q&A or a chat feed, but the audience is fundamentally viewing a program, not participating in a meeting. Because everyone is watching rather than talking, production value carries the entire experience. A webcast with flat audio and one static camera feels like a security feed; a produced webcast with clean switching, graphics, and broadcast audio feels like it came from a network studio. Scale is the other difference — webcasts routinely serve audiences that would break a normal meeting platform.
A livestream is the act of transmitting live video over the internet — the delivery layer underneath both formats above. When people say "livestream" as an event type, they usually mean streaming to a public or semi-public destination like YouTube, LinkedIn Live, or Facebook.
That public-facing quality is the practical distinction. Livestreams are how you reach an open audience: conference keynotes streamed to YouTube, community events, church services, graduations, panel discussions. Registration is optional or nonexistent, discovery matters, and the content often keeps working after the event as on-demand video. If you're weighing which destination fits, my guide to what's included in a corporate livestream package shows how the pieces fit together.
Strip away the marketing language and the three formats separate along four lines. Here's the comparison I walk clients through.
Audience size: webinars work best from ten to a few hundred; webcasts and livestreams scale to thousands because viewers don't need meeting seats. Interaction: webinars are built for it, webcasts allow moderated Q&A, livestreams typically offer public chat or nothing. Access: webinars and webcasts are usually registration-gated; livestreams are often open. Production emphasis: webinars lean on the presenter, webcasts lean on the production, and livestreams inherit whatever standard you set — which is why the same format can look amateur or broadcast-grade depending on who's producing it. Audio quality, for what it's worth, decides more than any other factor — I wrote about that in getting your livestream audio right.
Format changes the crew and gear, so it changes the price. A professionally produced single-operator webinar or full-virtual event typically starts around $2,950 — that covers a producer managing presenters, slides, switching, and the platform. In-person productions — a webcast or livestream from your venue or office — generally start around $3,900 with a professional crew.
Multi-camera productions and hybrid events typically run $5,000 to $15,000, and multi-day conference streaming lands around $11,000 to $30,000+ depending on rooms and days. The full pricing logic is in my guide to how much it costs to livestream an event.
Start with intent, not vocabulary. If the goal is teaching or lead generation and you want the audience talking back, you want a webinar. If the goal is delivering a message from few to many with maximum polish — town hall, earnings, launch — you want a webcast. If the goal is reach and accessibility for a broad or public audience, you want a livestream to an open platform.
Plenty of events combine them. We regularly produce town halls that are webcast to employees and simultaneously streamed to a public YouTube page, or webinars whose recordings become public marketing video. The formats are ingredients, not boxes — a good producer mixes them around your goal. Town halls in particular have their own playbook, which I covered in town hall live streaming.
Any of these formats can be hybrid — meaning there's an in-person audience and an online one at the same time. A sales kickoff in a ballroom with remote offices watching is a hybrid webcast. A training session with twenty people in the room and eighty online is a hybrid webinar.
Hybrid raises the bar because the remote audience deserves better than a camera at the back of the room. They need dedicated coverage, a produced feed, and their own audio mix. If your event has both audiences, read my hybrid event best practices guide before you lock a format or a budget.
Don't get hung up on the label a platform or vendor uses — get specific about audience, interaction, and stakes, and the right format falls out naturally. When you brief a production partner, describe the outcome you want: who's watching, from where, how they should participate, and what success looks like afterward.
That conversation, more than any terminology, is what determines whether your event lands. And whichever format you choose, the fundamentals are identical: prepared presenters, tested internet, professional audio, and a rehearsal. Formats differ; the discipline doesn't.
Still not sure which format your event calls for? Grab 20 minutes with me — tell me about the event and I'll tell you exactly what it needs, whether or not you hire us.
Interaction and scale. A webinar is an interactive session where attendees participate through Q&A, polls, and sometimes video. A webcast is a one-to-many broadcast where a large audience watches a produced program with limited interaction.
Not exactly. Livestreaming is the delivery technology both formats use. In everyday usage, "livestream" usually refers to broadcasting to a public platform like YouTube or LinkedIn, while "webcast" implies a private or registration-gated corporate broadcast.
Usually a webcast. Town halls are few-to-many by nature, and employees expect a polished program with moderated Q&A rather than an open mic. If leadership wants live back-and-forth with a smaller group, a webinar-style session can work well.
Webinars typically top out between 500 and 1,000 attendees depending on the platform license. Webcasts and livestreams scale to tens of thousands because viewers watch a stream rather than occupying meeting seats.
Professionally produced webinars and full-virtual events typically start around $2,950 with a single operator. In-person webcasts generally start around $3,900, and multi-camera or hybrid productions usually run $5,000 to $15,000 depending on scope.
Yes, and it's common. We often produce a single program that runs as an interactive webinar for registered attendees while being simultaneously webcast to a wider internal audience and livestreamed publicly for reach.
It depends on the stakes. Routine internal training runs fine self-serve. When the webinar represents your brand to customers or prospects — launches, executive briefings, paid sessions — professional production noticeably lifts credibility and keeps the session running smoothly.
Webinars typically run on Zoom Webinars, GoToWebinar, or Teams. Webcasts often use enterprise platforms or private players embedded on a company page. Livestreams usually go to YouTube, LinkedIn Live, Vimeo, or Facebook — and a production team can feed several destinations at once.
