What Is COM? - Why the Design of Windows COM Is Still Beautiful Today (archived 2026-07-27)

Key Points

• To explore the design principles of the Windows COM interface and its ongoing significance.
• Described the Windows COM interface design structure
• Analyzed key components like IUnknown and GUIDs
• Discussed the concept of binary compatibility
• Identified design elements that contribute to COM's enduring functionality
• Illustrated how COM maintains its usability and relevance in modern software
• Showcased the aesthetic and practical appeal of COM architecture