The eCommerce stack, chosen for fit
An eCommerce stack is a business decision before it is a technology one. The platform sets the ceiling on what channels you can run, how cleanly they connect to your operations, and how much manual work every order creates behind the scenes. Renio helps operations-led businesses choose and architect that stack so the storefront is an extension of the operating core, not a separate system someone reconciles by hand. We work across Shopify and commercetools, and we recommend the fit before we build. The builds that go wrong are usually the ones that treated the storefront as a design project and left the operations to be solved afterwards.
Shopify and Shopify Plus
Shopify is the right answer for most product businesses: quick to launch, well supported, and, at the Plus tier, deep enough for high-volume, multi-store and international operations. Its B2B capability now runs wholesale ordering alongside the consumer store, which is often why a growing brand outgrows a simpler storefront. Where teams get into trouble is not the storefront, it is the connection behind it: Shopify running as an island, with orders and stock re-keyed into the ERP. We build Shopify so that it plugs into your operating core, with orders, fulfilments, inventory and pricing kept in one live picture.
commercetools and composable commerce
commercetools is a composable, MACH-based platform for larger operations whose requirements a packaged storefront cannot express cleanly: multiple front ends, complex catalogue and pricing logic, or multi-brand and multi-channel structures that need to be assembled from best-of-breed parts. Composable commerce buys real flexibility, and it costs real complexity. We help you judge whether your requirements actually use that flexibility, and we implement commercetools where they do.
| Shopify Plus | commercetools | |
|---|---|---|
| Fits best | Most product businesses, single storefront to multi-store | Larger operations assembling the stack from parts |
| Front ends | Shopify’s own storefront, themes and checkout | Multiple custom front ends over one commerce engine |
| Commerce logic | Standard flows, extended with apps and functions | Complex catalogue, pricing and channel logic, built to spec |
| Operational overhead | Low; the platform carries it | Real; you run more of the stack |
| Over-engineering test | Rarely the over-engineered choice | Over-engineered unless the flexibility is genuinely used |
Storefront to ERP architecture
The storefront and the ERP have to behave as one system. Orders placed online should appear in the operating core without re-keying, stock should reflect one live position across every channel, and fulfilment should flow back to the customer automatically. We design this from day one, integration-ready, so the stack grows by adding connected channels rather than adding manual work. The integration layer that makes this hold up under volume is core to what we do, and it usually sits around a NetSuite or other ERP core.
Replatforming without operational damage
Most replatforming pain is self-inflicted: the storefront is cut over before orders, inventory and fulfilment are proven against the new stack, and the ops team spends launch week firefighting. We do it in the opposite order. The ERP and integration layer are made stable first, the new platform runs alongside the old where that lowers risk, and the cutover happens channel by channel. A replatform done this way is one your customers and your operations team barely notice.
Multi-channel and marketplace architecture
Every channel you add multiplies the ways stock and orders can drift out of sync unless the architecture holds them together. We make the ERP the single source of truth and treat the webstore, marketplaces and physical channels as connected endpoints against it, so there is one live inventory position and no overselling one channel while stock sits idle for another. Done properly, adding the next channel is a connection, not a rebuild, and the data stays clean enough for AI operations to act on later.