API integration services that connect your systems and keep them talking.

API integration is the work of connecting two or more software systems through their APIs so they can share data and trigger actions automatically, without anyone copying information between them by hand. An API is the doorway a piece of software offers for other software to talk to it; integrating those doorways is how your website, payment provider, CRM and accounting tool become one joined-up system instead of separate islands.

Done well, API integration means an order placed on your site instantly updates your stock, raises an invoice, notifies the warehouse and syncs to your CRM — all on its own. Avaib has delivered software across more than 600 projects since 2004, and applies that same engineering discipline to building integrations that are secure, monitored, and built to keep working when the systems around them change.

It depends on how many systems you are connecting and how complex they are. A single, well-documented integration is a small fixed-price job, while joining up several enterprise systems is a larger project. Avaib's model is senior expertise at a cost-effective rate, typically around USD 25 per hour, which is why businesses in Australia, the US, Canada and the Middle East work with us instead of paying big-firm prices.

The bigger cost with integrations is usually the upkeep, not the build. We are upfront about both, and after a short scoping conversation we will send you a free, no-obligation written estimate with a clear scope and a ballpark price.

Most integrations break because something upstream changes and nobody notices. A vendor updates their API, a token expires, a field is renamed or a rate limit is hit, and a cheaply built connection fails quietly in the background. Around half of developers report hitting a production break from an unannounced third-party change.

We build against that from the start: we pin to specific API versions, watch for vendor change notices, and add monitoring and alerts so a broken connection raises a flag immediately. Temporary failures are retried automatically, and the rest of your system keeps running if one service goes down.

Yes. Missing or messy API documentation is one of the most common problems we deal with, and it does not stop us. We probe and test the real behaviour of the system, work out how it actually responds, and document it as we go.

That means you get a working, understood integration even where the original vendor left you very little to work with, and a written record of how it behaves so the next change is easier.

Yes, and it is one of the parts most likely to go wrong if it is rushed. Different systems use different approaches — OAuth, API keys, token exchange, signed webhooks — and each has its own traps. We implement the right one properly for each connection.

Credentials are stored and rotated securely rather than hard-coded, and we verify every incoming call, so an integration is a controlled connection, not an open door into your systems.

You own it. The integration code, its design and the credentials are yours. We favour clean, standard, portable connections over proprietary middleware you would have to keep paying for.

That keeps your options open: you can change one of the connected tools later, or move the work to another team, without being trapped or starting from scratch.

API integration is connecting to APIs that already exist — usually a third party's, so your systems can talk to their tools. Custom API development is building your own API, so that your systems, partners or apps have a clean, secure doorway to talk to you.

They often go together: we might build a custom API for your product and, at the same time, integrate it with the outside services it relies on. We do both under one team, so the pieces fit.

A single, well-documented integration can be a matter of days to a couple of weeks. Joining up several systems, or working with poorly documented or legacy ones, takes longer, and the honest estimate comes after we have mapped what is involved.

Because we build and test in slices, you see real, checkable progress early rather than waiting for one big delivery at the end.