What is Amazon Cognito primarily used for?

Amazon Cognito is primarily used for user sign-up, sign-in, and access control. It enables developers to easily add authentication and authorization to their applications. With Cognito, you can manage user identities and allow users to sign in through a variety of methods, including social identity providers like Facebook, Google, and Amazon, as well as standard username and password credentials.

Cognito provides features such as user pools that help you manage your user directory and identity pools that provide temporary AWS credentials for users. This plays a crucial role in securing access to AWS resources. Overall, Cognito streamlines the process of managing user accounts and permissions, significantly simplifying the development of secure applications.