API Essentials: Mastering REST, SOAP, and gRPC

Not necessarily. GraphQL is amazing for front-end flexibility and preventing overfetching, but it adds complexity. REST is often better for simple CRUD applications or when you need robust, built-in HTTP caching.

Webhooks are one-way (Server to Client) and trigger-based (one request per event). WebSockets are two-way and persistent (the connection stays open for a continuous stream of data).

Yes, primarily in enterprise environments like banking and healthcare. Its strict XML contracts and built-in security standards make it the go-to for high-stakes, formal transactions where reliability is more important than speed.

You need a 'Signaling Server' just to help the two peers find each other's IP addresses and agree on media formats. Once that 'handshake' is done, the server steps out of the way, and the peers communicate directly.