DLT's full form is Distributed Ledger Technology, which is a form of mandatory registering system for sending promotional or transactional SMS in India. Bulk SMS services that use DLT are assured of compliance with regulations, transparency, and high delivery rates. Businesses are required to register their sender IDs, templates, and headers on the DLT platform. https://www.shreetripada.com/dlt-full-form-explained.php