How to create a CloudFormation template for S3?

To create a CloudFormation template for S3, you can follow these steps:

Open a text editor and create a new file for your CloudFormation template.
Start by defining the CloudFormation template version at the top of the file, for example:

AWSTemplateFormatVersion: '2010-09-09'

Define the resources section where you will specify the configuration for your S3 bucket. Here is an example configuration for creating an S3 bucket:

Resources:
  MyS3Bucket:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: my-example-bucket

You can add more properties to customize your S3 bucket, such as versioning, logging, and encryption. Here is an example that enables versioning and encryption for the bucket:

Resources:
  MyS3Bucket:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: my-example-bucket
      VersioningConfiguration:
        Status: Enabled
      BucketEncryption:
        ServerSideEncryptionConfiguration:
          - ServerSideEncryptionByDefault:
              SSEAlgorithm: AES256

Save the file with a .yaml or .json extension, depending on the format you prefer to use.
Upload the template to the AWS CloudFormation console or use the AWS CLI to create a stack using your template.
After the stack creation is complete, you should see your S3 bucket created with the specified configuration.

This is a basic example to get you started with creating a CloudFormation template for an S3 bucket. You can further customize and add more resources to your template as needed.