Oracle Fusion Middleware is a family of software products that provides a comprehensive platform for building, deploying, and managing enterprise applications. It includes a range of technologies such as middleware, application servers, content management systems, business process management tools, and development tools. With Oracle Fusion Middleware, organizations can integrate their IT systems, automate business processes, and optimize their operations to improve efficiency and reduce costs. This skill involves expertise in installing, configuring, and troubleshooting the various components of Oracle Fusion Middleware.