diff --git a/README.md b/README.md
index 7fb66fd..3e24fb4 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ Each Section contains a number of units. **Below Table Link** containing informa
 - [Advanced Identity](sections/advanced_identity.md)
   - AWS STS (SecurityToken Service), Amazon Cognito (simplified), What is Microsoft Active Directory (AD)?, AWS Single Sign-On (SSO)
 - [Other AWS Services](sections/other_aws_services.md)
-  - Amazon WorkSpaces, Amazon AppStream 2.0, Amazon Sumerian, AWS IoT Core, Amazon Elastic Transcoder, AWS AppSync, AWS Amplify, AWS Device Farm, AWS Backup, AWS Elastic Disaster Recovery (DRS), AWS DataSync, AWS Application Discovery Service, AWS Application Migration Service (MGN), AWS Migration Evaluator, AWS Migration Hub, AWS Fault Injection Simulator (FIS)
+  - Amazon WorkSpaces, Amazon AppStream 2.0, Amazon Sumerian, AWS IoT Core, Amazon Elastic Transcoder, AWS AppSync, AWS Amplify, AWS Device Farm, AWS Backup, AWS Elastic Disaster Recovery (DRS), AWS DataSync, AWS Application Discovery Service, AWS Application Migration Service (MGN), AWS Migration Evaluator, AWS Migration Hub, AWS Fault Injection Simulator (FIS), AWS Step Functions
 - [AWS Architecting & Ecosystem](sections/architecting_and_ecosystem.md)
   - Well Architected Framework General Guiding Principles, AWS Cloud Best Practices - Design Principles, Well Architected Framework 6 Pillars, AWS Well-Architected Tool, AWS Right Sizing, AWS Ecosystem - Free resources, AWS Marketplace
 
diff --git a/images/step_functions.png b/images/step_functions.png
new file mode 100644
index 0000000..a84902f
Binary files /dev/null and b/images/step_functions.png differ
diff --git a/sections/other_aws_services.md b/sections/other_aws_services.md
index 7652ab7..e5ba06d 100644
--- a/sections/other_aws_services.md
+++ b/sections/other_aws_services.md
@@ -17,6 +17,7 @@
   - [AWS Migration Evaluator](#aws-migration-evaluator)
   - [AWS Migration Hub](#aws-migration-hub)
   - [AWS Fault Injection Simulator (FIS)](#aws-fault-injection-simulator-fis)
+  - [AWS Step Functions](#aws-step-functions)
 
 ## Amazon WorkSpaces
 
@@ -166,6 +167,16 @@ and Database Migration Service (DMS)
 - Supports the following AWS services: EC2, ECS, EKS, RDS…
 - Use pre-built templates that generate the desired disruptions
 
+## AWS Step Functions
+
+- Build serverless visual workflow to orchestrate your Lambda functions
+- Features: sequence, parallel, conditions, timeouts, error handling, etc.
+- Can integrate with EC2, ECS, On-premises servers, API Gateway, SQS queues, etc.
+- Possibility of implementing human approval feature
+- Use cases: order fulfillment, data processing, web applications, any workflow
+
+<img src="../images/step_functions.png" height="300" width="300">
+
 * * *
 
 [<img align="center" src="../images/back-arrow.png" height="20" width="20"/> Advanced Identity](./advanced_identity.md)&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[<img align="center" src="../images/list.png" height="30" width="30"/> List](../README.md)&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;[AWS Architecting & Ecosystem <img align="center" src="../images/forward-arrow.png" height="20" width="20"/>](./architecting_and_ecosystem.md)