HTTPS
The locked version of web traffic, so requests and responses stay private and unaltered in transit.
Think of a sealed envelope carried by a trusted courier instead of a postcard. HTTPS is the secure way your app talks to websites and services.
It wraps HTTP, the basic way browsers and apps send requests and get responses, in encryption, secret math that hides the contents. A certificate, a digital ID checked by your device, proves you are talking to the right server.
In practice you see addresses that start with https:// and a lock icon in a browser. Your app’s network calls should use HTTPS for all endpoints, especially for sign‑in, payments, and any data you do not want exposed.