SSL
also called TLS, HTTPS, certificate
The certificate and protocol that encrypt traffic between browser and server.
The padlock. Encrypts the connection.
What It Is
In the BWH map, SSL lives under Technology — Security. Stated plainly: the certificate and protocol that encrypt traffic between browser and server.
It is a mechanism rather than an opinion: set up properly it behaves predictably, and set up badly it fails just as predictably. Keep it that plain and it will still be true in twelve months.
How It's Used
Why It Matters
SSL is one of those items that only becomes visible when it is missing. When it is unclear, small technical debts compound into a rebuild. It is worth pinning down before anyone builds on top of it.
Think of plumbing. Nobody admires it, everybody notices when it leaks. The padlock. Encrypts the connection.
Termshift™
How the meaning shifts depending on who is using it, and where.
Practitioners use SSL as shorthand and expect no explanation — the certificate and protocol that encrypt traffic between browser and server.
Outside the industry, most people would just say: the padlock. Encrypts the connection.
The Bottom Line
Keep SSL plain: the padlock. Encrypts the connection. That is the version that holds up in a real project.