mellomvare

Mellomvare is a Norwegian term that has two main meanings depending on the context. In economics it denotes intermediate goods—goods used as inputs in the production of other goods. In information technology, mellomvare, or middleware, refers to software that sits between operating systems and applications to enable communication and integration.

In economics, mellomvare are goods that are not final products but are used to produce other goods and services. They include components, parts, and assemblies that require further processing before reaching consumers. They play a role in supply chains and production planning, and their value is added through processing, assembly, or transformation. They are distinguished from råvarer, or raw materials, and ferdigvarer, finished goods.

In IT, mellomvare is middleware—software that connects disparate applications, services, databases and user interfaces. It provides services such as messaging, authentication, data transformation, transaction management, and orchestration, helping to decouple systems and enable scalable architectures. Common categories are message-oriented middleware, application servers, data access middleware, and API gateways. Examples include integration engines and service buses, which facilitate interoperability in enterprise environments.

Because the term is used in two distinct fields, context is essential to interpret mellomvare correctly. Related concepts include råvare (raw material), ferdigvare (finished good), and the broader idea of middleware in software engineering.