Start with the handoff that slows your team down
A useful integration moves a business process forward. An approved order might need to create an accounting record. A subscription change might need to update a customer portal. A booking might need to appear in an operations dashboard. Before connecting the tools, define which event starts the process and how your team knows it finished.
We help scope connections between existing applications, customer-facing products, and internal systems. The implementation depends on the APIs each provider makes available, the account permissions you hold, and the business rules the connection must preserve.
What an API integration project includes
- API discovery: review documentation, account access, available endpoints, rate limits, and test environments.
- Data mapping: define how fields, record identifiers, dates, and status values correspond between systems.
- Synchronization: choose event-driven updates, scheduled transfers, or a combination based on the workflow.
- Error handling: plan retries, duplicate prevention, and a visible way to resolve exceptions.
- Operations: agree on monitoring, access ownership, documentation, and ongoing maintenance.
Decide which system owns each record
Two-way sync is not simply two one-way connections. If a customer changes an address in one tool while a staff member edits it in another, the integration needs a rule for resolving that conflict. Choose a source of truth for each important field and identify which system may create, update, or delete the record.
For an initial release, a one-way transfer may be enough. An order system can send approved orders to an accounting system while accounting remains responsible for invoice status. Explicit boundaries make failures easier to understand and reduce accidental overwrites.
Webhooks, scheduled sync, and recovery
Webhooks can notify your application when an event occurs, where the provider supports them. Scheduled polling checks for changes at agreed intervals. The choice depends on required freshness, API limits, and how the provider handles missed or repeated events.
For example, an order notification might arrive twice, or an external service might be unavailable after accepting a request. The integration should identify repeated work and reconcile uncertain outcomes before creating a duplicate. This is an illustrative design scenario, not a claim about a completed client project.
Some failures need a person to make a decision. Define what the operator sees, how they correct the record, and when it is safe to retry. A dashboard that says only “failed” leaves the most important part of the workflow unfinished.
Review access and maintenance before launch
Use only the permissions the connection needs, keep credentials out of browser code, and establish who can rotate or revoke access. Identify which logs are useful for troubleshooting and avoid recording unnecessary sensitive data. The exact controls should reflect the information and systems involved.
External APIs can change. Handover should identify provider dependencies, recurring service costs, test procedures, and the support arrangement for future updates. Availability and delivery commitments depend on the agreed scope and the third-party services.
Prepare your integration brief
List the tools to connect, the record types involved, the direction of each transfer, and how quickly an update must appear. Include approximate volumes, known exceptions, and whether documentation and test access are available. Do not put passwords or private customer records in your initial brief.
Use our software project brief outline to organize those details. For the surrounding application, explore custom business software or web application development. Our cost guide explains how integrations affect an estimate.