Illustrate the organization of your code base. That is, illustrate which layers exist in your (onion) architecture. Make sure to illustrate which part of your code is residing in which layer.
Architecture in the small is concerned with the architecture of individual programs. At this level, we are concerned with the way that an individual program is decomposed into components.
Architecture in the large is concerned with the architecture of complex enterprise systems that include other systems, programs, and program components. These enterprise systems may be distributed over different computers, which may be owned and managed by different companies. Source: I. Sommerville Software Engineering
Illustrate the organization of your code base. That is, illustrate which layers exist in your (onion) architecture. Make sure to illustrate which part of your code is residing in which layer.