Why business service should leverage API gateway to achieve business goals alongside agility, TTM, innovation, and continuity. How to design REST and HTTP API? with one industry use case example, what to consider before we design API gateway. multiple approaches of API design with pros & cons of every approach. Difference between multiple methods of implementation for Private and Public API. How to device and implement controlling the API consumption. Importing OpenAPI to build API. A demo on that REST API using AWS resources.