Contact your Microsoft Premier ADM for further information. Take a look at each product site under security and identify your product support for TLS 1.0 and 1.1. TLS 1.0 and 1.1 are going to start getting deprecated n 2020 for some products with version 1.2 is in use, and 1.3 will start to gain widespread use. It ensures the parties are who they are, and data retains integrity through encryption. It is most used to secure data between a web browser (Client) and website (Server) via HTTPS at the Transport layer. Transport Layer Security (TLS) is a security protocol. App Dev Manager Al Mata highlights important support information for helping teams prepare changes coming with TLS versions used by Microsoft technologies.