A TLS tunnel (also called an SSL tunnel) is basically a secure, encrypted pathway between two endpoints. Think of it as a private, locked channel where your data travels safely from point A to point B, protected from anyone trying to snoop or tamper with it along the way.
The magic happens through the TLS protocol, which creates an encrypted connection between a client and server. This end-to-end encryption is what keeps your data confidential and intact as it moves across the internet.