| Traditional | Main Program and Subroutines | Main program, subroutines | Procedure calls | Parameters and return values | Main program coordinates execution through subroutine calls. |
| Traditional | Object-Oriented | Objects | Messages and method invocations | Object state | Objects encapsulate their internal representation. |
| Layered | Layered | Layers | Layer interaction protocols | Data between layers | Each layer provides services to the layer above and uses services from the layer below. |
| Layered | Virtual Machine | Opaque layers | Layer interfaces | Data between layers | Results from fully opaque layers. |
| Layered | Client-Server | Clients and servers | RPC-based network protocols | Requests and responses | Clients know server identities; servers do not need to know client identities. |
| Data-Flow | Batch Sequential | Separate programs | Data transfer between programs | Aggregate data | Programs execute in sequence and pass completed data to the next program. |
| Data-Flow | Pipe and Filter | Filters | Pipes | Data streams | Filters transform input streams into output streams. |
| Shared Memory | Blackboard | Blackboard and components operating on it | Data access | Shared blackboard state | System control is driven by the blackboard state. |
| Shared Memory | Rule-Based | User interface, inference engine, knowledge base | Procedure calls and/or shared memory | Facts and queries | Inference engine uses rules in the knowledge base. |
| Interpreter | Interpreter | Command interpreter, interpreter state, user interface | Procedure calls and shared state | Commands and program state | Commands are parsed and executed while interpreter state is updated. |
| Interpreter | Mobile-Code | Execution dock, compiler/interpreter | Network protocols | Code, program state, data | Program representations can become processing components. |
| Implicit Invocation | Implicit Invocation | Event-related components | Event-based invocation | Events | Components respond to announced events. |
| Implicit Invocation | Publish-Subscribe | Publishers, subscribers, proxies | Network protocols | Subscriptions, notifications, published information | Publishers broadcast information to registered subscribers. |
| Event-Based | Event-Based | Event generators and consumers | Event buses | Events | Components communicate through event buses. |
| Distributed | Peer-to-Peer | Independent peers | Network protocols | Network messages | Peers can act as clients or servers. |
| Other | C2 | — | — | — | Common architectural style identified in the lecture. |
| Other | CORBA | — | — | — | Common architectural style identified in the lecture. |
