what do most retailers get wrong about replatforming?
i've helped 5 mid-market retailers (€80M-€300M GMV) through replatforming evaluations recently and the same mistake keeps showing up.
teams underestimate migration complexity by 40-50% because they price the platform but not the data lift, the merchandising rebuild, the integrator hours nobody warned them about, or the QA cycle that blows up at the third month.
platform selection is the easy part, one team i'm advising is 9 months into a phased move on one of the standard composable platforms (commercetools, SCAYLE, Spryker), and the platform's fine, the budget pain is on the data and ops side.
what's been the most underestimated piece of your last replatform?