Communications Platform · Sales, Marketing & CX
Should you build or buy Video APIs?
Video APIs provide real-time video communication infrastructure — typically built on WebRTC — that developers embed in applications to enable video calls, screen sharing, recording, and live streaming without building and operating media servers themselves. They handle SFU/MCU infrastructure, TURN/STUN relay, recording pipelines, and cross-browser compatibility.
The build-vs-buy decision for Video APIs turns on how central video is to your product and whether your usage volume has crossed the threshold where self-hosted WebRTC infrastructure — which is genuinely mature — starts meaningfully undercutting commercial per-minute pricing; the specifics decide it.
Build it, buy it, or bridge?
When building makes sense
Real-time video on WebRTC is no longer exotic territory. LiveKit, mediasoup, Jitsi, and Janus are mature open-source SFU stacks with documented production deployments. Engineering teams have published migration accounts moving away from commercial APIs once they crossed roughly 500 concurrent users, citing savings of 5–10x on infrastructure cost. At 1,000 concurrent users, the licensing gap against platforms like Agora can run to six figures annually. For companies where video is the core product — telehealth platforms, virtual event tools, education technology — owning the media infrastructure makes sense because the tradeoffs are understandable and the savings are real. The ongoing cost is media server management, TURN/STUN infrastructure, recording pipelines, and the operational overhead that comes with running distributed real-time systems. That's not trivial, but it's not mysterious either.
When buying makes sense
Below roughly 500 concurrent video sessions, managed infrastructure earns its keep. Daily.co, Agora, Vonage Video, and Twilio Video deliver known uptime, browser compatibility across devices, and per-minute pricing that beats the total cost of standing up and operating a self-hosted stack when volume is low or unpredictable. Spiky usage is particularly suited to buying — paying per minute when you need it beats running idle infrastructure. Commercial platforms also bundle recording, transcription, and analytics that would require additional build work otherwise. For companies embedding video as a supporting feature — a support chat tool, a brief async video message, a collaborative document session — the per-minute cost is irrelevant relative to the engineering time saved.
The desk read
Real-time video infrastructure on top of WebRTC is not a commodity problem anymore. LiveKit, mediasoup, Jitsi, and Janus are mature open-source SFU stacks that engineering teams run in production. Multiple teams have documented migrations away from commercial APIs like Agora and Daily.co once they crossed 500 or so concurrent users, where self-hosted infrastructure runs meaningfully cheaper. At sufficient scale, the savings are substantial.
Below that threshold, vendors earn their keep. Daily.co's per-minute pricing and Agora's free tier make managed infrastructure the obvious choice for early-stage products or applications with spiky, unpredictable load. The full custom build, including media server management, TURN/STUN infrastructure, recording pipelines, and 2am pager duty, carries a real ongoing cost that only makes sense when video is central to your product and usage is both high and predictable.
Frequently asked
What is Video APIs?
Video APIs provide real-time video communication infrastructure — typically built on WebRTC — that developers embed in applications to enable video calls, screen sharing, recording, and live streaming without building and operating media servers themselves. They handle SFU/MCU infrastructure, TURN/STUN relay, recording pipelines, and cross-browser compatibility.
When does building Video APIs make sense?
Building makes sense for video-native products at scale — typically above 500 concurrent users — where open-source SFU stacks like LiveKit or mediasoup run 5–10x cheaper than commercial per-minute pricing. Video as a core product, predictable high usage, and engineering capacity to run real-time infrastructure are the three conditions that make it defensible.
When does buying Video APIs make sense?
Buying makes sense for teams adding video as a secondary feature, early-stage products with unpredictable load, or anyone who doesn't want to operate media server infrastructure. The per-minute cost at low to moderate scale is well below the engineering overhead of running a self-hosted stack.
What are the main Video APIs vendors?
Representative vendors include Daily.co, Agora, Vonage Video API, Twilio Video. B4 Pro scores the full set.
How mature is open-source WebRTC infrastructure in practice?
Quite mature. LiveKit, mediasoup, Janus, and Jitsi run in documented production deployments at companies that have migrated off commercial APIs. The SFU layer is a solved engineering problem; the operational overhead — TURN/STUN, recording, monitoring — is real but manageable for teams with infrastructure experience.