A dessert company hired me because their margin was always a month stale. Sales lived in the POS. Inventory lived on paper. Finance lived in a spreadsheet. Every connection between those systems was a person retyping numbers — the most expensive API in the world.
The reflex — the one every vendor will happily sell you — is rip and replace: one shiny platform to rule them all. I've inherited enough of those projects to know how the story goes. Eighteen months, six figures, a migration that never quite finishes, and a staff that keeps the old spreadsheet alive in secret because it's the only thing they trust.
The architectural call
I built an integration layer instead. Kept all three working systems. Mapped the data flows, normalized the schema, and surfaced one real-time view of inventory position and cash flow. Then wrapped the whole thing in a 40-SOP control framework so it would survive staff turnover — which, in food service, is not a hypothetical.
Results, because I don't do adjectives: 70% of manual data entry eliminated. Inventory turns up 12%. Waste down 9%. And once margin was visible in real time instead of a month late, a margin-aware pricing model lifted revenue 18% while protecting margin. Zero compliance lapses, and a perfect 100 on the health inspection. Total platform replacement cost: zero, because there wasn't one.
The general rule
Replace a system when it's actually broken. Integrate when the systems work but the connections are people. Most SMBs are drowning in the second problem and getting sold solutions to the first.
This matters double in 2026 because AI has made integration radically cheaper — we even standardized the plug. The connective tissue that used to take a consulting team a quarter is exactly what LLM tooling is best at. The barrier to "one view of the truth" has never been lower. The discipline is knowing the goal is the view, not the platform — and that people actually use it.
Nobody's proud of an integration layer. That's how you know it's working — it disappeared into the business.