Do not rip and replace. Split by SKU and sequence it.
Start with your highest-volume, lowest-risk workload. Usually batch geocoding or address validation. It is backend-only, it has no UI dependency, no design review, and no mobile release cycle. Move it, measure it over one full billing period, and use the recovered budget to fund the navigation decision — rather than fighting for new budget in a quarter where you have not yet proven anything.
Then separate your ETA layer from your guidance layer. Most fleet platforms discover they need a routing API for dispatch and an SDK for the cab, and that bundling both into one purchase is precisely what made the bill unpredictable. Once the two are separate line items, both become forecastable.
Validate truck attributes against your real lanes, not a demo route. Restriction data quality varies by corridor. The only test that means anything is your own historical routes replayed through a truck profile, with violations counted.
GreenLight ELD, an ELD provider in Joliet, Illinois, runs routing and geocoding this way — one contract, truck-grade routes, no in-house map team.
Bart Taborowski