OLF- It stands for object linking and Embedding.

it was developed by Microsoft in the early 1990s.

its purpose was to enable easy interprocess communication.

it provided support to embed documents from one application into another application.

it enabled users to develop applications that required inter-operability between various products such as MS Word & Ms. Excel.

COM - stands for Component Object Model.

It was introduced by Microsoft around 1995.

Its purpose was to reduce the overall complexity of software.

it enables distributed across multiple organizations or departments.

it enhances software maintainability.