AWS Step Functions is a service provided by Amazon Web Services that makes it easier to orchestrate multiple AWS services to accomplish tasks. Step Functions allows you to create steps in a process where the output of one step becomes the input for another step, all using a visual workflow editor.
The service uses a Finite State Machine (FSM) architecture to represent the workflow. A workflow consists of a set of tasks, each of which represents a discrete activity to be performed. A state of the “state machine” defines each task.
The State Machines model does a simple job – it uses given states and transitions to complete the tasks. State Machines are also known as behavioral models. It’s an abstract machine (system) that can be in one state at a time, but it can also switch between a finite number of states. This means it doesn’t allow infinity loops, which removes one, often very costly, source of errors entirely.

AWS Step Functions serverless framework helps organizations improve application resiliency, leverage other AWS services, and maintain complex applications with less code. These three benefits are critical in today’s fast-paced, cloud-driven world. It also integrates seamlessly with other AWS services. Developers can set it to run in parallel with other tasks, hold for external workflows, or wait for other internal jobs to finish. Users can incorporate machine learning programs into their applications with AWS SageMaker, batch computing capabilities with AWS Batch, serverless ETL through AWS Glue, and much more.