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In previous lessons, we covered testing principles and

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techniques. In this lesson, we will discuss a

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type of software process that is heavily based

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on the use of testing. The agile development

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process. Also called test-driven development. To do that,

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we will revisit some of the assumptions that

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led to the definition of the more traditional

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software processes. The ones that we discussed so far.

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We will see how, when some of these assumptions are

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no longer valid, we can change the way in which we

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look at software processes. And we can change the way

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in which we look at software development in general. We will

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discuss how this changing perspective, lets us rethink software processes

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and make them more agile and better suited for context in

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which changes are the norm and we need to adapt

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fast. In particular, we will discuss two processes that apply the

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principles of agile software development and that are commonly

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used in industry. Extreme programming, also called XP, and Scrum.

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