Brownfield systems
A brownfield software system is an existing software system. If changes to an existing system require architectural changes, architecture design will be needed. Modifications may be necessary for purposes such as correcting defects, implementing new functionality, or changing existing functionality.
Architectural changes may also be performed on existing software to improve it in some way without changing any functionality. For example, an architecture for an existing software system might be refactored to improve a particular quality attribute. Most of the time, work on brownfield systems does not involve wholesale changes in the overall architecture unless major rework is required.
One of the crucial first steps for the ...
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