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Now that we have discussed a few foundational aspects
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of software architectures, and we have looked at some real
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world examples that help us to illustrate some of these
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points, to discuss some of these aspects. I want to
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introduce and define the different elements that compose a software
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architecture and also talk about architectural styles. So let's start
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by discussing a software architecture's
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elements. A software system's architecture
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typically is not, and should not be, a uniform monolith.
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On the contrary, an architecture should be a
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composition and interplay of different elements. In particular,
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as we quickly mentioned at the beginning of
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the lesson, there are three main types of elements
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in an architecture. Processing elements, data elements, and
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interaction elements. Processing elements are those elements that implement
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the business logic and perform transformations on data.
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Data elements, also called information or state, are those
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elements that contain the information that is used
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and transformed by the processing elements. And finally,
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the interaction elements are the glue that holds
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the different pieces of the architecture together. Now,
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the processing elements and the data are contained
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into the system components, whereas the interaction elements
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are maintained and controlled by the system connectors.
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And components and connectors get all cooked together
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into a systems configuration, which models
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components, connectors and their relationships. So
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now, let's look at components, connectors
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and configurations in a little more detail.
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