API Integration
API integration connects two systems by having one call the other's published interface directly — exchanging structured data without a person moving it by hand or a script imitating a user's clicks.
An API (application programming interface) is the way a piece of software deliberately exposes specific actions and data to other software — create this record, fetch this list, update this field — in a defined, structured format. API integration means building the connection that calls those exposed actions correctly: authentication, request formatting, and error handling and retry logic for when a call fails.
Good API integration treats failure as the normal case, not the exception. A request can time out, return a partial result, or hit a rate limit — the integration layer needs idempotent retries so a retried call doesn't create a duplicate record, and structured logging so a failure is diagnosable rather than a silent gap in data.
Most workflow automation and SaaS platform engagements are, underneath, largely API integration work: connecting a CRM, an ERP, a payment processor or an internal tool into the automated process or platform being built. Where a system has no API at all, RPA becomes the fallback.