The common denominator here is that software developers are expected to keep in mind many abstract yet complex models that constrain the code they write. In some ways, these constraints are a burden, and in other ways, they are the light that illuminates a path forward.
I will discuss an idea called Model-Minded Development that generalizes across DDD, design patterns, architecture, TDD, and coding styles. The defining characteristic of senior software developers is their facility with Model-Minded Development, and it enables them to operate at an advanced level.