Aplogies. You are correct, Andrew S. Tanenbaum, a renowned computer scientist, provides a definition of middleware in his book "Distributed Systems: Principles and Paradigms." According to Tanenbaum, middleware is defined as follows:

"Middleware is a layer of software that sits between the operating system and the applications on each machine in a distributed system. It provides a higher-level, more abstract view of the network to make programming distributed applications easier. It allows the applications to be written at a higher level of abstraction, hiding many details of the network, hardware, and operating system from the programmer."

In this definition, Tanenbaum highlights the role of middleware in simplifying the development of distributed applications by abstracting away the complexities of the underlying network, hardware, and operating system, allowing developers to focus more on the application logic. Middleware acts as an intermediary layer, providing services and functionalities that facilitate communication, coordination, and integration between different components in a distributed system.
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