Web, domains and email
TLS
Abbreviation for Transport Layer Security
In short and in plain language
TLS is the technical method that encrypts links on the internet.
This is the link between a browser and a website, or between mail servers. It took over from an older method.
It is behind the padlock you see in the browser.
A valid certificate protects the data of visitors. This is common today.
Definition
TLS is the technical method that encrypts the connection between a browser and a website or between mail servers. It is the successor to SSL and is behind HTTPS and the padlock symbol in the browser. A valid TLS certificate protects visitors' data and is common practice today.