Compare the same scope over the same period, including setup, subscriptions, usage, support and staff review. Include migration and an eventual handoff or exit. Keep recovered staff capacity separate from actual spending reductions. A proposal with less upfront work may still require substantial internal effort or ongoing operation to deliver the result.
Ask each option to list its assumptions and excluded work. Include who prepares the data, configures access, reviews exceptions, maintains connections and trains the team.
Use the AI implementation cost worksheet to compare editable scenarios and download their calculations. Its example values are synthetic; use actual quotes and measured workflow effort for a buying decision.
Set a review point after a representative operating period. If the selected approach cannot meet its acceptance criteria, decide whether to revise the scope, change the approach or stop.