There are about 15 years since all the Agile principles and values has come into the Biz-IT world, when the Agile Manifesto was stated. When we are working in an Agile environment, this is Agile. Including Agile Business Analysis.
So, it is about the environment, not about the job role, the job description etc. With Agile, the value comes from the customer. What will change when you're on an Agile team? Processes, products, relationships.
"Business Analysts must relinquish control of the requirements, the customer relationship, and the usual requirements documentation. Why? It's because on your agile team, you deliver working, valuable software every few weeks. And you (and your team and customer) don't know exactly what the end product will be-not until you start to build it, deliver it, and get feedback on it. That's when you learn what the need really is."
If you want more details like these, please read this article.
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