1. System Architecture :
System architecture is a conceptual model that describes the structure and behavior of multiple components and subsystems like multiple software applications, network devices, hardware, and even other machinery of a system. It is Architecture Description Language (ADL) which helps to describe the entire system architecture. So it is a much broader topic. System architecture can be broadly categorize into centralized and decentralized architectural organizations.
2. Software Architecture :
Software architecture refers to the process of creating high level structure of a software system. It is about the complete structure/architecture of the overall system means it converts software characteristics like scalability, security, reusability, extensibility, modularity, maintainability, etc. into structured solutions to meet the business requirement. Multiple high-level architecture patterns and principles are followed during defining architecture of a system. It mainly focuses more on externally visible components of the system and their interaction with each other.
Difference between System Architecture and Software Architecture :
