Follow the information across teams
A booking may begin with sales, move to finance and then reach operations. If every team retypes the same customer and package details, small differences accumulate. Map where the information originates and which system should own each field. An integration should move dependable information from that source, not simply connect every application to every other application.
Define the event and the result
Be specific about what triggers a transfer. Does an invoice appear when a quotation is accepted, when a booking is confirmed or when a deposit is received? What happens if the booking changes later? Write down the expected result for each event. These decisions are business rules, and they should be agreed before implementation.
Design for retries and exceptions
Networks fail and records arrive late. A robust integration needs to avoid creating duplicates when the same event is received again. It should record failures, support safe retries and show the responsible person what needs attention. Decide how conflicting updates are handled. The exceptional case is part of the product, not a reason to silently fall back to manual work forever.
Measure the operational improvement
Track the number of manual entries removed, time spent resolving mismatches and the frequency of failed transfers. Start with one high-value handoff and review the outcome with both teams. Keep an export or reconciliation route where appropriate. A useful integration reduces uncertainty about the record as well as reducing the number of keystrokes.
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