What is a gateway API?

An API gateway is programming that sits in front of an application programming interface (API) and acts as a single point of entry for a defined group of microservices. This is because, in addition to accommodating direct requests, gateways can be used to invoke multiple back-end services and aggregate the results.Click to see full answer. Keeping this in view, what is API gateway in AWS?API Gateway is an AWS service that supports the following: Creating, deploying, and managing a REST application programming interface (API) to expose backend HTTP endpoints, AWS Lambda functions, or other AWS services.Beside above, what is the difference between API and API gateway? To put it simply, an API Manager is a UI that helps in the management private and public APIs, while an API Gateway is a single server entry point that manages client connections to your product’s various microservices. You’ll likely use multiple APIs to provide the assets and data necessary to build each product page. Likewise, people ask, why do we need API gateway? API gateways help to prevent malicious attacks by providing an additional layer of protection from attack vectors such as SQL Injection, XML Parser exploits, and denial-of-service (DoS) attacks. Enables support for mixing communication protocols.When Should API gateway be used?An API gateway is essential for mobile applications. Simplifies the client by moving logic for calling multiple services from the client to API gateway. Translates from a “standard” public web-friendly API protocol to whatever protocols are used internally.