Why this matters
Most headless commerce evaluations get derailed by a demo. The frontend looks fast, the admin panel looks modern, and everyone in the room forgets to ask who owns the pieces that aren't on screen — search, PIM, hosting, editorial tooling. This scorecard is for teams comparing two or more headless commerce vendors and need a structured way to separate marketing claims from what will actually run in production.
Use it before the RFP goes out, and again after each vendor demo, so the same criteria get applied to every option.
Before you start
- [ ] Define which components you expect the vendor to own (commerce engine, storefront, search, PIM, hosting) versus which you'll assemble yourself
- [ ] Set a realistic time horizon for total cost of ownership — 3 years minimum, since headless projects often look cheap in year one and expensive in year three
- [ ] Decide whether you need full MACH composability or whether a partial composable approach (fewer moving parts, faster to ship) actually fits your team's size and roadmap
- [ ] Identify your non-negotiables: PCI scope, data residency, existing ERP/CRM integrations, current dev team's language/framework skills
Technical requirements
| Criterion | Questions to ask | Red flag |
|---|---|---|
| API quality | Is it GraphQL, REST, or both? Rate limits? Versioning policy? | No public API changelog or breaking changes without notice |
| Storefront decoupling | Can you swap the frontend without touching commerce logic? | Frontend and backend ship as one deployable unit |
| Extensibility | Can you add custom business logic without forking core code? | Customizations require vendor's professional services for every change |
| Data portability | Can you export your full catalog, orders, and customer data in an open format? | Proprietary export formats or export fees |
| Search & merchandising | Is search a first-party service or a bolt-on? | Search relevance tuning locked behind a separate paid tier |
| Uptime & scaling | What's the actual SLA, and what's the penalty structure? | SLA credits capped at one month's fees |
Vendor evaluation criteria
- [ ] Ecosystem maturity — How many certified integration partners exist for your specific stack (ERP, CRM, tax, shipping)?
- [ ] Open-source vs. proprietary — If proprietary, what happens to your data and customizations if you leave?
- [ ] Implementation timeline — Get a reference-checked estimate, not the vendor's own quote. Full MACH implementations commonly run 9–12 months versus 3–6 for partial composable.
- [ ] Total cost of ownership — Include licensing, hosting, developer hours, and third-party service fees. Full composable stacks often run 3–5x the TCO of a partial approach for equivalent functionality.
- [ ] Support model — Is there a dedicated technical account manager, or a ticket queue?
- [ ] Roadmap transparency — Does the vendor publish a public roadmap, or do features arrive unannounced?
Red flags to watch for
- [ ] Reference customers who won't do a live call (only case studies)
- [ ] Pricing that requires a sales call to see even ballpark numbers
- [ ] "Headless-ready" claims for a platform that still ships a monolithic admin/storefront bundle
- [ ] No clear answer on who owns uptime when three vendors (commerce, search, CDN) sit in the same request path
How to use this
Score each vendor 1–5 on every row above, weight the categories that matter most to your business (a marketplace weighs search and catalog scale differently than a DTC brand weighs checkout customization), and require a live technical walkthrough — not a slide deck — before finalizing. The vendor that scores highest in a sales demo is not always the one your engineering team will thank you for in eighteen months.
How Syslabs helps
Choosing a headless commerce platform is as much an integration decision as a commerce decision — the vendor's API is only half the equation once your ERP, PIM, and fulfillment systems need to talk to it. Syslabs works with ecommerce teams on exactly this seam: evaluating platform fit, then building the custom software and API integration layer that makes the chosen stack actually work end to end.