Transport Layer Security - the newer, more secure version of SSL for encrypting internet communications. Like an upgraded lock system that's harder to break.
Modern websites use TLS 1.3 to ensure all data between your browser and the website is encrypted and secure.
TLS is a protocol, not a single cloud service. Cloud providers offer certificate management and TLS termination on load balancers, API gateways, and edge/CDN services. The listed services manage X.509 certificates used by TLS (issuance, storage, rotation) and integrate with endpoints that terminate TLS.