Step Function added support for testing individual states . Which lets you execute individual states with the following: And returns the following: With the TestState API, you can thoroughly test every state and achieve close to 100% coverage of a state machine. So, does this eliminate the need for Step Functions Local ? Can we do away with end-to-end tests as well? If not, where should this new API fit into your workflow, and how should you use it?

This is the third and final blog post in a series about shifting Observability left. If you have not yet read the first two, you can find the first post here and the second post here. Observability is fundamental to modern software development, enabling developers to gain deep insights into their application’s behavior and performance.