> For the complete documentation index, see [llms.txt](https://dhavaln.gitbook.io/serverless-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dhavaln.gitbook.io/serverless-docs/signup-signin/amazon-cognito.md).

# Amazon Cognito

Amazon Cognito lets you add user sign-up, sign-in, and access control to your web and mobile apps quickly and easily. It can scale to millions of users and supports sign-in with social identity providers, such as Facebook, Google, and Amazon, and enterprise identity providers via SAML 2.0.

In this case, I am using Cognito as it is very easy to start with and integrate, plus I am using a bunch of features that can integrate with Lambda where I can put my custom logic. 

For more details check out the [documentation](https://aws.amazon.com/cognito/). 

## Pricing

If you are using Amazon Cognito Identity to create a User Pool, you pay based on your monthly active users (MAUs) only. **A user is counted as a MAU if, within a calendar month, there is an identity operation related to that user, such as sign-up, sign-in, token refresh, or password change**. You are not charged for subsequent sessions or for inactive users within that calendar month.

| Pricing Tier (MAUs) | Price per MAU |
| ------------------- | ------------- |
| First 50,000        | Free          |
| Next 50,000         | $0.00550      |
| Next 900,000        | $0.00460      |
| Next 9,000,000      | $0.00325      |