Why should I not run my back office on my sales channel?

Because a sales channel models the world as its own orders. Wholesale purchase orders, retail EDI documents, purchasing, multi-location stock, and returns disposition are outside what it was built to hold, so each gets approximated with tags, apps, and exports. The approximations are what break as volume grows.

It also makes operations depend on the channel. When one storefront carries the back office, changing or adding a channel becomes a migration instead of a decision.

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