10DLC is a new standard for SMS deliverability that was introduced in 2019. The aim of 10DLC is to improve the deliverability of SMS messages by introducing a new set of guidelines for carriers. 10DLC has been designed to work with the existing SMS infrastructure, and it is compatible with all major carrier networks. In order to ensure compatibility, 10DLC uses a unique identifier that is assigned to each message. This identifier allows carriers to route messages through the 10DLC network without having to update their systems.