1. Software Architecture
2. Single Process Architecture
3. Computer Architecture
4. Client-Server Architecture
5. N Tier Architecture
6. RIA Architecture
7. Service Oriented Architecture (SOA)
8. Event-driven Architecture
9. Peer-to-peer (P2P) Architecture
10. Scalable Architectures
11. Load Balancing
12. Caching Techniques

Service oriented architecture (SOA) is an architecture in which the application logic of one (or more) applications are split up into separate services which can be called individually. Services can call each other too, if needed.

I have written a separate trail on Service Oriented Architecture, so I will not write more about it in this software architecture tutorial.