make a Decision Tree: Choose MOPC when: o Scalability and fault tolerance are crucial. o Decoupling and asynchronous communication are desired. o Message complexity and size vary significantly. Choose Shared Memory when: o Performance is of top priority and latency needs to be minimal. o System size is small and manageable. o Tight coupling and synchronous communication are preferred. Choose RPC when: o Existing code base relies on familiar RPC model. o Tightly coupled components with low latency requirements exist. o Simple communication with well-defined data formats is sufficient.