Amazon Cognito removes Machine-to-Machine app client price dimension

We're excited to announce a simplified pricing model for Amazon Cognito's machine-to-machine (M2M) authentication. Starting today we are removing the M2M app client pricing dimension, making it more cost-effective for customers to build and scale their M2M applications. Cognito supports applications that access API data with _machine identities_. Machine identities in user pools are clients that run on application servers and connect to remote APIs. Their operation happens without user interaction such as scheduled tasks, data streams, or asset updates. This change reduces the pricing of Cognito for customers using M2M authentication by removing the app client price dimension. Customers will continue to be charged based on the number of successful M2M token requests per month. Previously, customers were charged for each M2M app client registered, regardless of usage amount, and each successful token request made by the app client to access a resource. With this change, customers will only pay for their successful token requests, making it more cost-effective to build and scale M2M applications using Amazon Cognito. This pricing change is automatic and requires no action from customers. It is effective in all supported Amazon Cognito regions. To learn more about Amazon Cognito pricing, visit our [pricing page](https://aws.amazon.com/cognito/pricing/).