Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 375 discussion

AWS Step Functions is a fully managed service that makes it easy to build applications by coordinating the components of distributed applications and microservices using visual workflows. With Step Functions, you can combine multiple AWS Lambda functions into responsive serverless applications and orchestrate data and services that run on Amazon EC2 instances, containers, or on-premises servers. Step Functions also allows for manual approvals as part of the workflow. This solution meets all the requirements with the least operational overhead.

AWS Step Functions allow you to easily coordinate multiple Lambda functions and services into serverless workflows with visual workflows. Step Functions are designed for building distributed applications that combine services and require human approval steps. Using Step Functions provides a fully managed orchestration service with minimal operational overhead.

involves several serverless functions and AWS services, require manual approvals as part of the workflow, combine the Lambda functions into responsive serverless applications, orchestrate data and services = AWS Step Functions

Serverless && workflow service that need human approval::::step functions

Key: Distributed Application Processing, Microservices orchestration (Orchestrate Data and Services) A would be the best fit. AWS Step Functions is a visual workflow service that helps developers use AWS services to build distributed applications, automate processes, orchestrate microservices, and create data and machine learning (ML) pipelines. Reference: https://aws.amazon.com/step-functions/#:~:text=AWS%20Step%20Functions%20is%20a,machine%20learning%20(ML)%20pipelines.

Approval is explicit for the solution. -> "A common use case for AWS Step Functions is a task that requires human intervention (for example, an approval process). Step Functions makes it easy to coordinate the components of distributed applications as a series of steps in a visual workflow called a state machine. You can quickly build and run state machines to execute the steps of your application in a reliable and scalable fashion. (https://aws.amazon.com/pt/blogs/compute/implementing-serverless-manual-approval-steps-in-aws-step-functions-and-amazon-api-gateway/)"

Option A: Use AWS Step Functions to build the application. AWS Step Functions is a serverless workflow service that makes it easy to coordinate distributed applications and microservices using visual workflows. It is an ideal solution for designing architectures for distributed applications that involve multiple AWS services and serverless functions, as it allows us to orchestrate the flow of our application components using visual workflows. AWS Step Functions also integrates with other AWS services like AWS Lambda, Amazon EC2, and Amazon ECS, and it has built-in error handling and retry mechanisms. This option provides a serverless solution with the least operational overhead for building the application.