A PEPPOL (technical) primer
This is an very short technical overview of PEPPOL, and how parties to connect to the PEPPOL network and exchange business documents. To fully discuss all the ins and outs of everything PEPPOL goes beyond the scope of this article, but it should give you a very general view of the main components that are involved.
From a very high viewpoint, PEPPOL defines two core concepts: how to format documents so that they can be processed automatically, and how to exchange those documents between senders and receivers.