There are two fundamental approaches to the design of software architecture. One is a top-down design approach, and the other is a bottom-up approach. These strategies apply to a variety of disciplines, including software architecture design. Let's look at both of them in more detail.
Top-down versus bottom-up design approaches
Top-down approach
A top-down approach starts with the entire system at the highest level, and then a process of decomposition begins to work downward toward more detail. The starting point is the highest level of abstraction. As decomposition progresses, the design becomes more detailed, until the component level is reached.
While the detailed design and implementation details of the components...
