Getting Started with AWS CloudFormation

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AWS CloudFormation gives developers and systems administrators an easy way to create and manage a collection of related AWS resources, provisioning and updating them in an orderly and predictable fashion. Rather than manually combining individual AWS components like compute instances, storage, and databases, you can create a CloudFormation stack that deploys your entire application.
CloudFormation allows you to use a simple text file to model and provision, in an automated and secure manner, all the infrastructure needed for an application. With the file, called a template, you can create and update the infrastructure for your application across all AWS Regions and accounts in a controlled and predictable way. This helps ensure that your infrastructure meets your compliance and auditing requirements. You don't need to manually trigger AWS CLI commands or use the AWS Management Console. 

With CloudFormation, you define infrastructure as code through templates that are written in JSON or YAML text files. These templates provide the details and dependencies for the various AWS resources required to deploy your application. This allows your code to be version controlled and treated as infrastructure-as-code. Once defined, you can repeatedly deploy your application using the same template.

Some key benefits of using AWS CloudFormation include:

- Infrastructure as code - Define and provision AWS infrastructure through code, allowing the ability to version, share and reuse templates.

- Repeatable deployments - Easily roll back or update stacks as requirements change without manual intervention. 

- modeling interdependencies - Define relationships between resources so they are provisioned together in the proper order. 

- Centrally manage infrastructure - Define entire AWS environments consisting of many individual services so they can be automatically provisioned together.  

- Security - Resources are only provisioned with permissions specified in the template helping limit blast radius if a breach occurs.

In summary, AWS CloudFormation allows infrastructure to be coded and deployed in a pipeline-friendly, secure manner that avoids human errors by defining everything needed for an application in a template. This helps provision infrastructure in a safe, consistent and automated way.

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