Resources

When we create Lambda functions, they might be dependent on many different types of infrastructure resources, such as AWS, DynamoDB or AWS S3, so we can define these resources within the serverless.yml file and deploy them. When we add these resources, they get added to the serverless.yml file, and when they are deployed, they get added to the CloudFormation stack and are executed at serverless deploy. We can look at the following example to see how these resources are defined: 

resources:
  Resources:
    NewResource:
       Type: AWS::S3::Bucket
       Properties:
         BucketName: my-s3-bucket

Let's look at a simple example of Serverless Framework using AWS Lambda. 
You will need the following prerequisites for this: 

• A free AWS account needs to be created
• Nodejs 4.0 and higher must be installed on the local machine
• AWS CLI can also be installed, but this is optional