Agile Software Development: Architecture Patterns for Responding to Change

https://www.bignerdranch.com/blog/agile-software-development-architecture-patterns-for-responding-to-change-part-1/
https://www.bignerdranch.com/blog/agile-software-development-architecture-patterns-for-responding-to-change-part-2/
https://www.bignerdranch.com/blog/agile-software-development-architecture-patterns-for-responding-to-change-part-3/