API Gateway

Amazon API Gateway is a fully managed service that makes it easy for developers to create, publish, maintain, monitor, and secure APIs at any scale.

AWS Lambda

AWS Lambda is a serverless computing service provided by Amazon Web Services (AWS). we can create functions and self-contained applications.

With AWS Lambda functions we can perform any kind of computing task, from serving web pages to building backend APIs, and we can integrate lambda with other AWS services as well, here in this article, we are integrating lambda with API Gateway.

Serverless

Serverless is a framework that can be used to build applications on AWS, this will encapsulate things and provide us with a simple structure to create something in AWS. We can Code less and Build more with Serverless.

Build an API Gateway REST API with Lambda Integration

Pre-requisite: AWS

Amazon Web Services is a leading cloud provider which provides us with plenty of Paas, and Iaas, and services that we can use to build and deploy our applications. we going to build and Deploy a REST API with API Gateway which is integrated with AWS Lambda and expose GET and POST methods, here we going to use an open-source framework Serverless for deploying our API.

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API Gateway

Amazon API Gateway is a fully managed service that makes it easy for developers to create, publish, maintain, monitor, and secure APIs at any scale....

Install Serverless

Install serverless by running the below command...

Create REST API and its resources

To create a REST API, we need to do the following:...

Deploy Our REST API

To deploy our REST API, you can run the below command....

Deploy Serverless Application

API Gateway Resources...

Test our API

Now we can test deployed REST API, we can invoke the API through any browser client to test out the API, below are sample API calls....

Other Use Cases

Using API Gateway – Lambda integration, we can deploy many applications, like below:...

Conclusion

In this blog, we learned how to create a REST API with a Lambda function integration. In addition, the Serverless framework simplifies the deployment process and enables developers to focus on writing code. The API Gateway-Lambda integration can be used to build various types of applications, from serverless applications to microservices. By leveraging this powerful tool, developers can build scalable and efficient APIs on AWS....