What it is
A commerce platform or portal provides the buyer-facing surface for catalogs, account access, pricing, quoting, checkout, order history, and service content. For your project, it should act as the buyer workflow layer that coordinates with ERP, CRM, PIM, CPQ, middleware, inventory, and fulfillment systems.
Evaluate this category by the workflow it supports in your business. A useful tool decision should name buyer behavior, internal handoffs, source-of-truth records, integration boundaries, and failure modes before implementation begins.