Only if you enjoy paying $500K+ for software that takes 18 months to implement and still doesn’t work for modern commerce. Most brands win with composable stacks—think Lego blocks vs. a single, inflexible sculpture.

Pick one system to own each piece of truth (CommerceOS for products, Quickbooks or NetSuite for financials), then enforce data contracts like a bouncer at a VIP club. No exceptions, no compromises.

The edge cases that happen at 2 AM on Black Friday: cancellations, partials, returns, and timing mismatches. Build exception handling first—because Murphy’s Law applies to APIs too.

Not in a dusty corner of your IT department. Treat EDI as a first-class citizen—embedded in your order flow with proper validation and label creation. Target and Walmart don’t accept excuses.

When QuickBooks starts feeling like a Honda Civic and you need a Tesla. $10M+ revenue, multi-entity consolidation, or complex revenue recognition are your triggers. But consider an operations platform first—you might not need the full ERP upgrade.

Stop updating 5 different systems every time you add a SKU. Use CommerceOS as your single source of truth—it pushes to Shopify, Amazon, EDI, and wholesale portals with channel-specific presentation. One catalog, infinite channels.

APIs are like texting—fast, modern, real-time (Shopify, Amazon). EDI is like sending a formal letter through the postal service—slow, structured, but Target and Walmart won’t accept anything else. You need both.

Native integrations: days (like plugging in a USB). iPaaS workflows: weeks (like assembling IKEA furniture). Custom APIs: months (like building a custom house). Start simple, add complexity only when you need it.

Everything you care about: inventory sync, order routing, financial reconciliation. Build exception monitoring and manual fallback processes—because when integrations fail, your customers don’t care about your technical debt.

Buy iPaaS (Celigo, Workato) for standard workflows—don’t reinvent the wheel. Build custom only when you’re creating a competitive moat or commercial tools literally can’t handle your requirements. Your dev team has better things to do.

Like changing the engine on a moving car. Run both systems for 30-60 days, validate everything matches, then cut over during your slowest period (not Black Friday). Monitor like a hawk for the first 48 hours—because ERP migrations are where careers are made or broken.