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API Modernization Services
NEWINTERFACES,NOTHINGBROKEN
We replace aging and inconsistent APIs with well-designed, documented and secure ones, while the applications and partners that rely on the old interfaces keep working until they have moved across.
An API is a promise to everyone who built on it, so modernizing one means changing the implementation without breaking the promise until consumers have moved.
New interfaces without breaking existing integrations
- 01Versioning plan
- 02Compatibility tests
- 03Consumer migration
API modernization updates the interfaces through which your software talks to other systems. That can mean replacing SOAP or undocumented endpoints with a consistent REST or GraphQL design, adding proper authentication, versioning and rate limits, or placing a clean facade over a legacy core. We plan the change around the consumers that depend on what exists today.
It suits companies whose integrations break with every release, whose partners complain about documentation, or whose mobile and web teams are slowed by an interface designed for another era. It is narrower than a full system rewrite. Often the internals stay as they are for now and only the contract that others see is rebuilt.
Talk to us about your projectCapabilities, End to End
What It Looks Like When It Ships
From Kickoff to Launch
We document what exists from code and traffic, identify every consumer and ask them what causes pain, which usually reorders the priorities the provider had assumed.
The new interface is specified and reviewed before code is written, with mock servers that let consumer teams try it early and raise problems while changes are still cheap.
New endpoints are implemented behind a gateway alongside the existing ones, and compatibility tests built from recorded traffic confirm that behavior matches wherever it is meant to stay the same.
Consumers move across in agreed order with support from us, traffic on the old version is watched as it falls and each legacy endpoint is switched off only when its usage reaches zero.
Built for Teams Like Yours
What buyers ask before they start
If yours is not here, ask us directly. The first conversation is free and useful whether or not we work together.
Book a callYes, by running old and new side by side. The existing interface keeps working while the new one is introduced, often behind the same gateway. Consumers migrate on an agreed schedule and the old version is retired only when traffic shows nobody uses it. Compatibility tests built from real requests confirm that anything meant to stay the same really does.
REST suits most integrations between systems and public or partner APIs, since it is widely understood and easy to cache. GraphQL helps when varied front ends need different shapes of the same data and you control the consumers. Some organizations use both. We decide from who will consume the API and how, and we avoid adopting a style for its novelty.
Not necessarily. A facade can present a modern interface while translating calls to the legacy system underneath. That gives consumers a stable contract immediately and lets the internals be replaced later, piece by piece, without another round of integration changes. Where the old core cannot meet performance or reliability needs, we say so and plan its replacement as a separate stage.
With a written policy that consumers can rely on. It states what counts as a breaking change, how versions are identified, how long an old version remains supported and how notice is given. Additive changes ship without a new version. Usage of deprecated endpoints is measured, and owners of remaining consumers are contacted directly before anything is switched off.
Consistency, clear errors and honest documentation. Names and patterns should repeat across endpoints, error messages should say what went wrong and how to fix it, and the reference should be generated from the same specification as the code so it cannot drift. A sandbox with sample data and a few worked examples usually does more for adoption than any amount of prose.
