Amazon Cognito now supports provisioned capacity for customers who need higher request limits for APIs used for authentication, user management, and other operations. Customers can request limits higher than the defaults provided by Cognito in any of nine API categories, including User Authentication, User Creation, User Federation, User Read, and User Token. For a complete list of API categories, and the API operations in them, refer to the documentation. Provisioned capacity will be charged based on the desired request-per-second (RPS) increment and the duration (expressed as a portion of a month).
Source:: Amazon AWS