TLS, IPsec, and SSH are protocols designed to secure network communications, but they serve different purposes and operate at various layers of the OSI model. Transport Layer Security (TLS) is widely used for securing data in transit over the internet, particularly in web applications (HTTPS). Operating at the transport layer, TLS encrypts data between clients and servers to prevent eavesdropping and tampering, making it ideal for applications requiring privacy, such as online banking and e-commerce.