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In this video, we are going to do a hands on loop, which is the wild card microservices with rest

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API and lambda.

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So we are going to develop a system that synchronous microservices with Amazon API, Gateway Rest API.

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You can see the image on the slide.

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Basically, we will create a lambda function using the lambda console.

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After that, we will create the rest API.

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This time we will create this API using the API gateway console.

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And after that we invoke our API from the client application so you can see the image, what we put

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in this video, when we invoke our rest API API gateway to the request to our lambda function, lambda

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runs the function and returns response to API Gateway and so on.

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Back to our client application.

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This time we will again create a same HTTP method and we are creating a product API, but the request

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will be invoked.

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The API is lambda will be differentiate because this time we will create a rest API rest API invoke

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database lambda with different event object.

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And these images object include different attributes from the HTTP API.

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So for that purpose we will design and develop a lambda function according to these request event JSON

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objects.

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Let's create this architecture diagram with a console.

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I'm going to start with creating any lambda function.

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Please go to the lambda section and create a new function.

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So this function will be the similar and basic lambda function.

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So let's create a lambda function for that purpose.

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I'm going to give the name for that function.

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And runtime will be the Node.js and leave as it is for the other configuration and click the create

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function button.

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For this example.

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And also during the whole course, we use the default Node.js runtime for our lambda functions.

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Lambda runs our code only when needed and scales automatically from a fee request per day and 1000 requests

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per day.

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It is automatically scaled and fully serverless compute service OC.

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As you can see that we have created the lambda function and it is basically the turn back to 200 code

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and the body information.

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We can modify our lambda function as long as function response align with the incoming event from the

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API Gateway Rest API.

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We will see in the developments in the next video.

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For now, let's see the default lambda function.

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So as you can see, that lambda function is required for the logging incoming event.

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For that purpose I'm going to copy paste this line of code you can find from the error section code

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in the console log operation.

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Basically we will income, we will lock incoming event from the rest API and deploy the function.

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So I'm not going to change anything for now.

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In the next video we will develop this lambda function.

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After understanding the understanding the incoming event JSON from the rest API.

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But before that, let's create API Gateway Rest API.