SMB market is different than the big business market in a number of different ways. Their paying capacity is limited, there software needs are limited, they don't need all the functionality that is embedded in the huge ERP suites that are in the marketplace today... .

The one big challange for any ERP vendor then has been

"how to carve out the needed functionality from their ERP suites that meets the needs of their new customer?".

The answer lies in something called "Service Oriented Architecture (SOA)"...

-amit