Finding an order fulfillment services provider begins with a Request for Proposal, commonly referred to in the logistics sector as a fulfillment RFP. The service level and capabilities of the third-party logistics (3PL) providers that respond to an RFP will correlate directly with the quality of the RFP itself. If you cast too wide a net, you risk introducing extra noise into the process, which wastes time as you weed out the poor-fit providers and identify the good ones.