You are a developer at a company that has built a serverless application that allows users to get NBA stats. The application consists of three different levels of subscription Free, Premium and Enterprise, implemented using stages in API Gateway. The Free level allows developers to access stats up to 5 games per player, and premium and enterprise get full access to the database. Your manager has asked you to limit the free level to 100 concurrent requests at any given point in time. How can this be achieved?

Answer options:

A.Under usage plan for the stage change Burst to 50 and Rate to 50.
B.Under usage plan for the stage change Burst to 100 and Rate to 100.
C.Under usage plan for the stage changeBurst to 50 and Rate to 100.
D.All of the above.

Answer: B
Option A is incorrect as changing Burst to 50 and Rate to 50 will mean that 50 concurrent requests can be made and processed at any given point in time.
Option B is CORRECT as changing Burst to 100 and Rate to 100 will allow 100 concurrent requests to be made and processed at any given point in time.
Option C is incorrect as changing Burst to 50 and Rate to 100 will allow 50 concurrent requests to be made but 100 processed at any given point in time. The remaining 50 requests will be a 429 error and will have to retry after an interval.
Option D is incorrect as not all options are correct.
Reference:
https://docs.aws.amazon.com/apigateway/latest/developerguide/api-gateway-request-throttling.html
https://aws.amazon.com/blogs/aws/new-usage-plans-for-amazon-api-gateway/