Software architecture isn't always talked about deeply by the lean / agile software community. The idea of an traditional architecture team has become less popular; yet quality, performance and speed of implementation are all things that strong engineering teams value.
The idea of good architecture or design in the large hasn't gone away so much as how to get there and how to build systems that can flex and adapt to changing business needs.
Ian Cooper talks beautifully about the ideas of Hexagonal Architecture, sometimes called a ports and adapters architecture and where it can fit into a modern engineering strategy.