API Development
The interfaces that let your systems talk to each other, and let partners build on top of what you have.
Making the systems you already own work together instead of replacing them.
Replacing a working system is expensive and risky. Connecting it to the others is frequently cheaper, faster and produces most of the benefit people expect from replacement.
The work is in agreeing which system owns which record, moving data in one direction per document type, and making failures visible rather than silent.
The interfaces that let your systems talk to each other, and let partners build on top of what you have.
Systems for organisations where several departments, sites and approval chains all have to work from the same data.
Moving a business off paper and spreadsheets without stopping the business to do it.
Software shaped around the way your business already works, instead of a packaged product you have to reorganise around.
People look for this subject using a lot of different wording. These all describe the same thing, and this is the page for all of them.
One per document type, decided explicitly at the start. Two-way sync of everything is where integrations go wrong, because conflicts become unresolvable.
Database reads, scheduled file exchange or screen-level automation are the usual fallbacks. All are workable; they just need more care.
Related topics
Describe it in your own words and we will tell you what it would take, or whether something simpler would do the job.