AWS, Cloud Computing

4 Mins Read

Orchestrating Microservices in the Cloud with AWS Step Functions

Voiced by Amazon Polly


Microservices architecture has gained significant popularity for its ability to break down complex applications into smaller, independently deployable services. While microservices offer scalability and flexibility, orchestrating their interactions can be challenging. AWS Step Functions provides a powerful solution to this challenge by enabling you to seamlessly design, run, and scale workflows that integrate with your microservices. In this blog post, we’ll explore the concept of AWS Step Functions and demonstrate how it can be used to orchestrate microservices in the cloud.

AWS Step Functions

AWS Step Functions is a fully managed serverless service that allows you to coordinate multiple AWS services into serverless workflows. It enables you to build applications using a visual workflow editor, defining states and transitions between them. Each state in the workflow represents a step in your application, and the transitions define the execution flow.

Pioneers in Cloud Consulting & Migration Services

  • Reduced infrastructural costs
  • Accelerated application deployment
Get Started

Key Features of AWS Step Functions

  1. Visual Workflow Design:
  • AWS Step Functions offers a visual editor that allows you to design workflows using a drag-and-drop interface.
  • This visual representation makes it easy to understand and modify the flow of your application.
  1. State Transitions:
  • States in AWS Step Functions represent tasks or activities in your workflow.
  • Transitions between states define the conditions for moving from one state to another.
  1. Built-in Error Handling:
  • AWS Step Functions provides built-in error handling, allowing you to define how your workflow should respond to failures.
  1. Integration with AWS Services:
  • It seamlessly integrates with various AWS services like AWS Lambda, AWS Batch, AWS Glue, and more, making it versatile for different use cases.

Orchestrating Microservices with AWS Step Functions

Let’s consider a scenario where you have three microservices – User Service, Order Service, and Notification Service. The workflow involves creating a new user, placing an order for that user, and sending a notification. We’ll use AWS Step Functions to orchestrate these microservices.

Create lambda functions with the below code

CreateUser Functions

PlaceOrder Function

SendNotification Function

Step-by-Step Guide

Navigate to AWS Step Functions:

  • Log in to the AWS Management Console.
  • In the “Find Services” search bar, type “Step Functions” and select it from the results.

Create a New State Machine:

  • Click the “Create state machine” button.
  • In the visual editor, you’ll see a canvas where you can design your workflow.


Add States for Microservices:

  • On the canvas, add states for each microservice:
  • Drag and drop a “Task” state for the User Service.
  • Connect it to a “Task” state for the Order Service.
  • Finally, connect it to a “Task” state for the Notification Service.



Configure AWS Lambda Functions:

  • Click on each state and configure the AWS Lambda function ARN for the corresponding microservice in the right panel.
  • AWS Step Functions seamlessly integrates with AWS Lambda, so you can use Lambda functions to perform the tasks of each microservice.



Define Transitions:

  • Set up transitions between states by connecting the states with arrows.
  • Define the flow of your workflow by connecting the “Next” property of one state to another.

Review and Save:

  • Review the visual representation once you have configured your workflow to ensure it matches your desired microservices orchestration.
  • Click the “Save” button to save your state machine.


Start Execution:

  • After saving, click the “Start execution” button.
  • Provide input data for your workflow execution, which will be used as input to the first state in your workflow.
  • Start the execution and monitor the progress in the Step Functions console.

Following these steps, you can create a visual representation of a microservices orchestration workflow using AWS Step Functions in the AWS Management Console.





AWS Step Functions provides a powerful and scalable solution for orchestrating microservices in the cloud.

Its visual workflow design, built-in error handling, and seamless integration with various AWS services make it ideal for managing complex workflows. By using AWS Step Functions, you can efficiently coordinate microservices, improve reliability, and streamline the development and maintenance of your serverless applications.

Drop a query if you have any questions regarding AWS Step Functions and we will get back to you quickly.

Making IT Networks Enterprise-ready – Cloud Management Services

  • Accelerated cloud migration
  • End-to-end view of the cloud environment
Get Started

About CloudThat

CloudThat is a leading provider of Cloud Training and Consulting services with a global presence in India, the USA, Asia, Europe, and Africa. Specializing in AWS, Microsoft Azure, GCP, VMware, Databricks, and more, the company serves mid-market and enterprise clients, offering comprehensive expertise in Cloud Migration, Data Platforms, DevOps, IoT, AI/ML, and more.

CloudThat is recognized as a top-tier partner with AWS and Microsoft, including the prestigious ‘Think Big’ partner award from AWS and the Microsoft Superstars FY 2023 award in Asia & India. Having trained 650k+ professionals in 500+ cloud certifications and completed 300+ consulting projects globally, CloudThat is an official AWS Advanced Consulting Partner, AWS Training Partner, AWS Migration Partner, AWS Data and Analytics Partner, AWS DevOps Competency Partner, Amazon QuickSight Service Delivery Partner, Amazon EKS Service Delivery Partner, Microsoft Gold Partner, AWS Microsoft Workload Partners, Amazon EC2 Service Delivery Partner, and many more.

To get started, go through our Consultancy page and Managed Services PackageCloudThat’s offerings.


1. Can AWS Step Functions handle errors in workflows?

ANS: – Yes, AWS Step Functions includes built-in error handling capabilities. You can define error states within your workflow to manage failures gracefully. By specifying error catchers in each state, you can control the flow of execution when an error occurs. This ensures that your microservices orchestration is resilient, and you can design workflows that respond intelligently to unexpected issues, improving the reliability of your serverless applications.

2. How are AWS Step Functions billed?

ANS: – AWS Step Functions is billed based on the number of state transitions and the time your state machine is in execution. The pricing includes the number of state transitions, the duration of your executions, and any additional features like logging. You pay per state transition and execution time, making it a cost-effective solution for building scalable workflows.

WRITTEN BY Imraan Pattan

Imraan is a Software Developer working with CloudThat Technologies. He has worked on Python Projects using the Flask framework. He is interested in participating in competitive programming challenges and Hackathons. He loves programming and likes to explore different functionalities for creating backend applications.



    Click to Comment

Get The Most Out Of Us

Our support doesn't end here. We have monthly newsletters, study guides, practice questions, and more to assist you in upgrading your cloud career. Subscribe to get them all!