Recently one of my developer customer (developer of PC and mobile based applications) was asking is there any difference available between Outlook Object Model (OOM) API and Pocket Outlook Object Model (POOM) API? If yes, where it's documented? As you know, the Pocket Outlook Object Model (POOM) API is a COM-based library that provides programmatic access to Personal Information Manager (PIM) data on mobile devices. It provides functionality for manipulating PIM-item collections and folders.
I pointed him to have a look at the MSDN document, which points at the principal differences between the Pocket Outlook Object Model and the Outlook object model.