Basware versus Medius: two AP-automation platforms that start from the invoice

What each purchasing module actually does. Basware e-Procurement offers requisition lines approved then automatically issuing purchase orders, a feature called Advanced Approvals, advanced catalogue management with automated stock integration, and budget check matrices that show approvers the budget impact of what they are signing. Medius Procurement is described with more specificity: users search items or browse punch-out catalogues into a basket; any purchase request can be linked to a contract at creation, with awarded price and items carrying through to the purchase order and remaining contract budget visible before spend is committed; approval workflows route requisitions, and approvers can accept or reject by email without logging in, so approvers need no licence, which removes real cost when hundreds of occasional approvers are involved; purchase orders are generated for automatic distribution; and cumulative spend limits can enforce a hard stop at checkout or demand an extra approval. Integration runs through Medius Connect with managed connectors for various ERP platforms.

Where Basware is clearly ahead. Its e-invoicing footprint is genuinely differentiated and hard to replicate: a dedicated network for sending, receiving and archiving with country compliance, enrichment, Vault archival, interoperability and a public Global e-Invoicing Compliance Map, plus Invoice Lifecycle Assurance covering AP Protect, audit and recovery, statement matching and supplier bank account fraud checks. Invoice Matching is a named product. And the technical disclosure is the best in this part of the category: Basware runs a genuinely public developer site documenting a REST API and XML integration methods, with five named API families covering AP Automation, Network, Vault, Data Access and SmartPDF, plus an Integration Selection Guide, an XML file-format reference, and regional cloud endpoints for Europe, the USA, Australia and Canada with test and production environments. Medius mentions no API at all on its procurement page and no developer documentation could be located.

What neither covers. For Basware, strategic sourcing is absent. The e-Procurement page mentions only operational sourcing and a price-on-request feature and does not mention RFQs, tenders or auctions at all, and no sourcing or auction product appears anywhere in the solutions navigation. There is no supplier management product and no contract management product in that navigation. Spend analysis is not offered as a named product, since Basware Insights sits inside AP Automation, so it could not be verified. No supplier portal is described on the e-Procurement page. For Medius, invoice matching reaches the procurement product only through the AP Automation integration rather than standing alone, and two-way versus three-way behaviour is never stated on either side. No supplier portal is mentioned on the Medius procurement page.

Medius is the thin record here, and blocked or missing pages are the cause. Several Medius URLs returned 404, including /solutions/procurement/ and /about-us/, and the Sourcing and Contracts solution pages could not be reached at all. The consequence is that RFQ and tender management, bid comparison and auctions are entirely unverified for Medius, not absent: Sourcing and Contracts exist as named navigation items, and the newsroom records a 20 October 2026 contracts product launch linking contract intelligence to business spend. Ownership is likewise unverifiable from the vendor site, with Marlin Equity Partners reported as majority holder since 2017, an Advent International minority from March 2022 and an October 2025 reported sale exploration, none confirmed. A vendor whose own pages 404 is not the same as a thin product, but it does mean you will get capability detail from a demo rather than a website. Basware has a smaller version of the same problem: /company/newsroom and /company/about-us both 404, so Basware publishes nothing readable about its own ownership either.