Stock drifts
The shopfront and the warehouse do not share one picture of inventory.
Theme and Liquid when that is what is needed. The useful work is usually accounts, orders, inventory, fulfilment, and the systems around the shop.
Typical problems
The shopfront and the warehouse do not share one picture of inventory.
Wholesale buyers are pushed through a retail card flow that does not match how they pay.
Orders are re-typed into a fulfilment tool, so mistakes and delays are built in.
The look is fine. The operations behind it are not.
What I do
Shop, stock, fulfilment, and shipping status kept in step.
Read case studyTrade accounts and Net-30 style terms instead of a retail-only checkout.
Read case studyAvailable behind your brand for Shopify build and integration overflow.