Each tool in a construction stack is usually good at its job. The cost is in the gaps: the exports, the re-keying, the sync that broke last Tuesday, the two reports that don't agree. That's the integration tax. Here is the math behind it.
Drag the slider. Every pair of systems is a place where data has to cross, by an integration or by a person.
Adding system #6 added 5 new possible connections.
Every line is a possible point-to-point integration
Each of N systems can talk to the other N−1. Count every pair once and you get N(N−1)/2. That number grows with the square of N: 4 systems make 6 pairs, 8 make 28, 12 make 66. The seventh tool doesn't add one connection. It adds six.
Real stacks don't build all of them. The pairs left unwired are still there; they're bridged by people with exports, email and spreadsheets. Either way, someone owns that gap: a developer maintaining a sync, or a coordinator re-typing a number.
When N systems each store the record, there are N places a number can be wrong. A hub reduces the wiring to N connections, but each tool still keeps its own copy. Only one data model gets you to one copy.
Pick a record and match the route to your stack. Every hand-off between tools is a re-key, an export or a sync someone has to check. Put in your own minutes and volumes.
Not a benchmark. The minutes and volumes are yours to set; we don't publish industry averages we can't source. It counts only the hand-offs, not the time spent finding out two copies disagree.
There's no free option. Here is what each architecture is good at and what it costs, plainly.
Our bet: for most contractors, one record beats a slightly better edge feature in one tool, because job cost, billing and the forecast all depend on the same numbers. If a specialist tool is critical to how you work, keep it and connect it to the core through the REST API. One integration is easier to own than a web of them.
Terms on this page: Single source of truth · API · Webhook · ERP
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