Prepare a software integration project
Map your systems, data and failure cases before connecting them.
An integration project starts with a business event, not an API endpoint. Decide what should happen, which system owns the information and how someone will notice if the transfer fails. Then choose the mechanism that connects the systems.
A short data map and a few concrete failure cases will make the scope more useful than a list of tools alone. This guide provides a starting checklist rather than a promise that every system can be connected.
Name the event and the outcome
Illustrative example: when a field visit is approved, an invoicing tool should receive the information needed to prepare a charge. Write down who approves it, which records are included and what “received” means. Creating a draft invoice and sending a final invoice are different outcomes.
Confirm which parts should remain manual. An approval can be intentional, not a missing automation. Make that boundary visible so the integration does not silently take over a decision that belongs to a person.
Map the data and its owner
| Item | Question to resolve |
|---|---|
| Source of truth | Which system owns each field? |
| Identity | What stable identifier links the same record in both systems? |
| Direction | Is information sent one way or edited on both sides? |
| Timing | Does the process need immediate updates or is a scheduled transfer enough? |
| Corrections | What happens when an approved record changes? |
Add one realistic sample record with sensitive details removed. A field called “customer” can mean a person, an organization or an account. Resolve those meanings before mapping names between two interfaces.
Check access before committing to the scope
Verify API availability, permissions, account-plan restrictions and test environments. Identify who can grant access, and whether there is documentation for the specific action required. An export button is not necessarily an API, and an API does not necessarily expose every screen’s capabilities.
Do not share production passwords in a brief. Arrange the appropriate access during implementation and distinguish test data from live records.
Design for repeated and missing events
Delivery assumptions matter. Stripe’s documentation describes duplicate webhook events and warns that their order is not guaranteed. It also documents idempotency keys for retrying certain API requests. These are concrete examples of behavior to verify in each provider, not a universal contract for every API. See Stripe webhooks and idempotent requests.
For your project, decide how to recognize an event that was already handled, how to retry a failed operation, and how to find records that were never transferred. A successful network response should not be the only evidence that the intended business result occurred.
Give failures a human destination
Define who sees a failure and what information they need to resolve it. “Send an alert” is incomplete if nobody knows which record is affected or whether retrying could create a duplicate.
Include a correction path: inspect the source record, understand the error, retry safely when appropriate, and record the outcome. Decide how long diagnostic information is useful without collecting unnecessary sensitive data.
Test the business result
Before enabling the integration, check the normal path, a repeated event, missing information, expired access and an unavailable destination. Also test a correction made after the first transfer. Agree how to compare records between systems and how to stop the flow if something is wrong.
Your brief should identify the event, systems, data owners, sample record, timing, access, expected failures and responsible person. That is a concrete starting point for an integration project, whether it connects existing SaaS tools or becomes part of a new product.