How can I deploy the serverless application by using the AWS CDK Library?

 In the context of AWS, you can easily define and even deploy a serverless app by using the platform of AWS SDK Library by using the simple steps which are given below:-

Install cdk
First, you would need to install the CDK by using the command “npm install -g aws-cdk”

Initialize CDK project

Now you would need to create a new directory for your particular CDK project and initialize it by using the following command

Cdk init app - - language=typescript
Define structure
Import * as cdk from ‘aws-cdk-lib’;
Import * as lambda from ‘aws-cdk-lib/aws-lambda’;
Import * as apigateway from ‘aws-cdk-lib/aws-apigateway’;
Import * as dynamodb from ‘aws-cdk-lib/aws-dynamodb’;
Export class MyServerlessAppStack extends cdk.Stack {
  Constructor(scope: cdk.Construct, id: string, props?: cdk.StackProps) {
    Super(scope, id, props);

    // Define Lambda function

    Const myLambdaFunction = new lambda.Function(this, ‘MyLambdaFunction’, {
      Runtime: lambda.Runtime.NODEJS_14_X,
      Handler: ‘index.handler’,
      Code: lambda.Code.fromAsset(‘lambda’)
    });
    // Define API Gateway
    Const api = new apigateway.RestApi(this, ‘MyApi’, {
      restApiName: ‘My API’,
      description: ‘My API Gateway’
    });
    Const integration = new apigateway.LambdaIntegration(myLambdaFunction);
    Const resource = api.root.addResource(‘myresource’);
    Resource.addMethod(‘GET’, integration);
    // Define DynamoDB table
    New dynamodb.Table(this, ‘MyTable’, {
      partitionKey: { name: ‘id’, type: dynamodb.AttributeType.STRING }
    });
  }
}
Const app = new cdk.App();
New MyServerlessAppStack(app, ‘MyServerlessAppStack’);

Deploy structure

You can use the CDK CLI for the purpose of synthesize the cloud formation template and deploy the infrastructure for your particular AWS account.