intermodule

Intermodule is an adjective describing the relationship, interfaces, or interactions between modules within a larger system. It is used across computing, hardware, and organizational contexts to denote the coordination and communication that occur at module boundaries.

In software, intermodule communication (IMC) involves exchanging data, events, or control information between software modules. This can occur via function calls, message passing, events, or API calls, and is typically governed by explicit interfaces or contracts to promote loose coupling and encapsulation. Well-defined module interfaces enable independent development, testing, and deployment, and support patterns such as plugin architectures, service-oriented designs, and modular monoliths. In microservices, intermodule communication often uses HTTP/gRPC APIs, asynchronous messaging, or event streams, with attention to versioning and backward compatibility.

In hardware and embedded systems, intermodule connections refer to physical or protocol-based links between boards, modules, or subsystems. Common examples include serial buses like I2C, SPI, or CAN, and higher-level interconnects in modular hardware ecosystems, where standard interfaces guarantee interoperability.

In organizational and project management contexts, intermodule collaboration concerns the coordination between teams or components responsible for different modules of a system, product, or platform. Clear API contracts, governance, and integration testing help align development, releases, and maintenance.

Design considerations include interface stability, backward compatibility, versioning, clear documentation, and robust testing at the integration level. The term reinforces the distinction between intermodule communication and intra-module structure, and it highlights the importance of well-defined boundaries in modular design.