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The use of serverless computing has become a must nowadays, and some of you may already know a thing or two about Amazon Web Services like Lambda Functions, Step Functions. In this article, we’ll discuss AWS Step Functions, what they are used for, how to use them, and the advantages or disadvantages that they bring. Step Functions are an AWS-managed service that uses Finite-State Machine (FSM) model. The two keywords you need to remember are States and Transitions.