Glossary term
What is SSL (Secure Sockets Layer)?
SSL stands for Secure Sockets Layer.
In DevOps
The old name for TLS. People still say “SSL certificate”, but it is TLS underneath.
Learn it properly · DevOpsLesson 4: HTTPS, SSL and TLS: Certificates, Let’s Encrypt, ACMWhat the padlock in your address bar actually proves, how a free certificate gets issued, and the exact commands to put HTTPS on your own EC2 server.In System Design
The old, insecure predecessor of TLS (the name is still used loosely). Example: "SSL certificate" usually means a TLS certificate.
Learn it properly · System DesignLesson 3: HTTP & HTTPS Explained: Methods, Status Codes and TLSHTTP is the shared language of the web: a method and URL in, a status code and body out. HTTPS wraps it in TLS so nobody on the path can read or change it. Methods, idempotency, status codes, HTTP/1.1 vs 2 vs 3, and the TLS handshake.