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There are two more software process models that I want to cover, so

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bear with me. The first one is the Rational Unified software Process

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or IUP, which is s a very popular one based on UML.

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RUP works in an iterative way, which means it that it performs different

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iterations. And at each iteration, it performs four phases. So what I'm

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showing you here, is a high level view of the process. And I

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don't want you to focus on all the different details, because we

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will discuss these details later on, in a lesson that is actually dedicated

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to RUP. What I want to give you now, is just the

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gist of how this works. So, in each one of these four

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phases, which I'm going to describe in a second. We perform standard software

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engineering activities, the ones that we just discussed. And we do them

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to different extent, based on the phase in which we are.

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In particular, in the inception phase the work is mostly to sculpt

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the system. So basically figuring out what is the scope of the

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work, what is the scope of the project, what is the domain.

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So that we can be able to perform initial cost

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and budget estimates. The operational phase is the phase in which

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we focus on the domain analysis and define the basic architecture

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for the system. So this is a phase in which analysis

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and design are particularly paramount. Then there is a construction phase,

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which is where the bulk of the development actually occurs. And

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as you can see here, is where most of the implementation

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happens. And finally, the transition phase is the phase in which

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the system goes from development into production, so that

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it becomes available to users. And of course, this is

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the phase in which the other activities in software

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development become less relevant and deployment becomes the main one.