Simply put, voice call API is the technology that can integrate VoIP functionality into your app. It enables your users to make and receive calls over the internet, without hanging on the phone lines.
Guess what? Video call APIs are built on top of a standard and technology called WebRTC, that makes real-time communication seamlessly possible.
Nevertheless, WebRTC is actively used by giants like Google, Microsoft, and Apple, and is considered the future of building communication into apps and browsers.