One of the main advantages of the API Gateway is its pay-as-you-go feature. The pricing for the service amounts to 3.5 dollars per million requests and around 0.09 dollars per 1 GB of data transfer charges. Other optional charges may apply to the services that are chosen. Therefore, we need to make sure that it helps to reduce the cost of the backend. The cost we saw for the API Gateway can be extremely affordable for our project. For beginners, the AWS API Gateway is part of the free tier, and you can get 1 million requests per month for free. Kindly note that the free tier is only for new users.