Protecting data while it's being transmitted between systems or locations. Like sending sensitive mail in armored vehicles instead of regular postal trucks.
Online banking uses encryption in transit to protect financial data as it travels between customer browsers and bank servers.
Encryption in transit is typically implemented with TLS/HTTPS. These services help you provision, store, and manage TLS certificates used by load balancers, API gateways, and web servers to encrypt data moving between clients and services.