com surrogate is a Windows process that acts as a host for COM-based applications that require additional processes to run. It is also known as "dllhost.exe" and is responsible for executing COM objects outside of the original process that requested them.

COM Surrogate runs in the background and is typically used by Windows Explorer to generate thumbnail images for various types of files or preview them. It helps prevent crashes in the main process by isolating COM-based applications in a separate process, making the system more stable and secure.

In summary, COM Surrogate is a critical component in the Windows operating system that helps to improve system stability by running COM-based applications in a separate process. It is especially useful for tasks such as generating thumbnails and previews in Windows Explorer.

COM (Component Object Model) is a Windows technology that facilitates the development of system extensions, ultimately enhancing system performance. It provides a framework for managing all DLL files and simplifies the process of creating extensions.

A primary example of COM's functionality is its ability to generate thumbnails for various file types when a user opens a folder, making it easier to navigate and differentiate between files.

In addition, COM plays a crucial role in hosting DLL files and is commonly referred to as DLLhost.exe. It is a critical component in the functioning of Windows.