What is a CloudFormation stack?

CloudFormation is a service provided by Amazon Web Services (AWS) that allows you to create and manage infrastructure as code. A CloudFormation stack is a set of AWS resources that are created, updated, or deleted together as a single unit.
When you create a stack, you define the AWS resources you want to create and their configuration in a template file. This file is written in either JSON or YAML format and contains a description of the resources you want to create, their properties, and any dependencies between them.
Once you have defined the resources in the template, you can use CloudFormation to create a stack that will create all the resources at once, based on the instructions in the template file.
CloudFormation stacks are designed to be highly automated, repeatable, and easy to manage. They allow you to create and manage your infrastructure as code, reducing the potential for human error and enabling you to deploy and manage your applications quickly and consistently.
Benefits of using CloudFormation stacks:
  1. 1.
    Consistency: When you use CloudFormation stacks, you can ensure that your infrastructure is consistent across all environments. This means that you can create the same infrastructure in development, testing, and production environments, reducing the potential for configuration errors and security vulnerabilities.
  2. 2.
    Reusability: You can reuse your CloudFormation templates to create multiple stacks with the same resources and configurations. This saves time and effort and makes it easy to manage your infrastructure across multiple environments.
  3. 3.
    Automation: CloudFormation allows you to automate the creation, updating, and deletion of your infrastructure resources. This reduces the potential for human error and ensures that your infrastructure is always up to date.
  4. 4.
    Rollbacks: CloudFormation also allows you to roll back to a previous version of your stack if there are any issues during the deployment process. This ensures that your infrastructure is always available and that your applications can continue to function even if there are issues during deployment.