Reasons to Build Components    

• To provide additional functionality
• To support reusability
• To increase productivity
• To promote consistency

  The Component Software Problem

• Basic interoperability—How can developers create their own unique components, yet be assured that these components will interoperate with other components built by different developers?
• Versioning—How can one system component be upgraded without requiring all the system components to be upgraded?
• Language independence—How can components written in different languages communicate?
• Transparent cross-process interoperability—How can we give developers the flexibility to write components to run in-process or cross-process (and eventually cross-network), using one simple programming model?