AWS CloudFormation, API Gateway, Lambda & Dynamo DB. Rest API Implementation Ready to use Automation

This video demonstrates Simple API creation using Amazon Web Services CloudFormation, API Gateway, Lambda and Dynamo DB.

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Previous Video In the Playlist:    • AWS API Gateway, Lambda and Dynamo DB...  


Last time with AWS we have seen somewhat similar implementation where we have created an API gateway that was redirecting the requests to AWS lambda unction and then lambda function was
performing operations over DynamoDB. We are going to achieve this all through AWS CloudFormation in the last video if you want to see step by step everything as in how things are working how we are
creating the api gateway and configuring all the resources then I really recommend to first watch the previous video in the same playlist.
In this session we are going to cover it all through cloud formation so there is a cloud formation template we can just use that and everything will be done through cloud formation and then ultimately we are
going to test that. From learning perspective will be learning cloud formation concepts then we will also learn api gateway, lambda, IAM role and dynamodb cloud formation
requirement. The prerequisites for the same is that one should have AWS account to perform or implement this
learning.
In the cloud formation the pink arrow line shows dependency between two resources and black arrow lines shows the reference and association between two resources so by looking at this blueprint we can
say the dynamodb table is dependent on Iam role and the lambda function is dependent on dynamodb table and so on and then the black arrow line shows that lambda function is using the I am role
in fact it is using the a RN of the I am role which has just been created so that it can use this IAM role and associate that ARN of IAM role with the lambda function. The API gateway so first it
will create a REST API inside that it will create resource and then inside resource it we are going to create the API get a method and then we deploy the the API and then ultimately will grant
the REST API a permission to the lambda function. So now we are going to switch over to our cloud formation template we will just take a quick look of how it looks and the statements what
does it mean when you place them into the cloud formation. So we are looking at the cloud formation template right now the resources that we are going to create are lambda function DynamoDB table the
complete suite and deployment of API gateway and then we'll also create I am role and grant our REST API a permission to execute lambda function and then we have got some parameters
also.