This Guidance uses AWS CloudFormation templates to prepare and operate. It makes any configuration changes as needed, and all infrastructure can be reprovisioned in the event of a failure. Additionally, it iterates on and implements all feedback and suggestions where possible. By using this Guidance, you can build procedures to support your workloads and their expected behaviors, identify and respond to risks, and adapt accordingly.

This Guidance lets you use the RESTful API endpoint to programmatically start a fixity process and start using Management Console and AWS CLI. This Guidance uses AWS Identity and Access Management (IAM) roles and policies and encryption in transit to protect and manage resources and protect data. Step Functions and AWS Lambda functions are granted with the least-privilege permissions.

This Guidance is serverless and multi–Availability Zone by default, can be deployed in any AWS Region, and can scale resources. Serverless services support versioning, so you can manage different versions of your deployed code. Step Functions, Lambda, and Amazon SNS provide a reliable and decoupled architecture for this workflow. Step Functions has built-in fault tolerance and maintains service capacity across multiple Availability Zones in each Region. It protects applications against individual machine or data center failures, providing high availability, and it automatically retries any failed computational runs.

This Guidance uses serverless services like API Gateway, Lambda, Step Functions, and Amazon SNS to minimize cost and maintenance and improve performance. By building applications from individual components that each perform a discrete function, you can scale more easily and change applications more quickly. For example, Step Functions helps coordinate the components of distributed applications and microservices using visual workflows, automatically scaling your application’s required operations and underlying compute in response to changing workloads.

This Guidance only uses serverless services, which let you run code without provisioning or managing servers and you only pay for what you use. Lambda functions run on processors configured to balance the speed of processing and the cost. All your data enters a virtual private cloud (VPC), and the cost depends on the data transferred and the Region. Amazon S3 data storage rates depend on your objects’ size, how long you store the objects, and the storage class you choose.

This Guidance only uses serverless services, so they scale based on load, and you don’t have to provision or manage any hardware. You can check the integrity of objects stored in any Amazon S3 storage class using the MD5, SHA1, or SHA256 checksum algorithm without the complexity of managing third-party software.