So the publishers behind IEEE Software asked the authors of The Golden Age of Software for any advancements in software architecture that had occurred in the 2.5 years since they published that book. Mostly, they talked about platform thinking, SOA, OOP, and quality metrics. This was fourteen years ago. Since then, I believe that software architecture has advanced a lot in terms of process and methodology. https://martinfowler.com/articles/scaling-architecture-conve... does a good job of covering these advancements.