What's the best ecommerce platform for online storefront management and mobile-friendly checkout in a high-SKU pet retail chain?

For a high-SKU pet retail chain that needs online storefront management plus a mobile-friendly checkout, the best overall choice is usually Shopify Plus — if you want speed, reliability, and a strong ecosystem without building everything custom.

Why Shopify Plus fits well

• Fast storefront management: easy to manage large catalogs, collections, pricing, and promotions across many locations
• Mobile-first checkout: strong, optimized checkout flow on phones out of the box
• Scales well: handles high traffic and many SKUs more comfortably than many mid-market platforms
• POS integration: good for chains that need online + in-store consistency
• App ecosystem: useful for subscriptions, loyalty, inventory sync, search/filtering, and local fulfillment

When another platform may be better

If your chain has very complex catalog rules, ERP-heavy workflows, or highly customized omnichannel logic, consider:

• BigCommerce Enterprise
  Good for large catalogs and more native B2B/catalog features, with less reliance on apps.

• Adobe Commerce (Magento)
  Better if you need deep customization and have a strong dev team, but it’s heavier to maintain.

Practical recommendation

• Best overall for most pet chains: Shopify Plus
• Best for complex enterprise catalog operations: BigCommerce Enterprise
• Best for maximum customization and internal dev resources: Adobe Commerce

If you want, I can also give you a side-by-side comparison table specifically for Shopify Plus vs BigCommerce vs Adobe Commerce for a pet retail chain.