Middleware is computer software that provides services to software applications beyond those available from the operating system. It can be described as “software glue”. Middleware makes it easier for software developers to perform communication and input/output, so they can focus on the specific purpose of their application. Middleware is the software that connects software components or enterprise applications. Middleware is the software layer that lies between the operating system and the applications on each side of a distributed computer network. Typically, it supports complex, distributed business software applications.