That is a great question! System Composer's standard Architecture Template is geared toward generic architecture design (such as logical, functional, or physical, or even more!) whereas the Software Architecture Template is geared toward building software architectures.
There are more features in the software architecture template with code generation in mind such as support for export function-style modeling, client-server communications, viewing class diagrams of the architecture, and a schedule editor and functions editor for controlling execution order.
Both templates support Stereotypes, Views, Analysis, Allocations, and Sequence Diagrams so the decision for which template to use comes down to:
- Whether or not you use export function-style modeling, and/or
- You intend to generate and compile code from your architecture model.
Here are some references. Please don't hesitate to ask if you have any other questions!
Use a System Composer Architecture Model to describe systems as a combination of structural elements with underlying behavioral descriptions. Use a Software Architecture Model to easily define the execution order of your functions from your components, simulate your design in the architecture level, and generate code by linking your Simulink export-function, rate-based, or JMAAB models to components.
Regards,
Josh
