Integrations that survive the other side changing
API design and third-party integration with versioning, retries and contract tests.
What you get
- REST and webhook API design
- Versioning and deprecation policy
- Third-party integration with retries
- Contract tests
- Developer documentation
What changes
- A vendor's breaking change fails a test instead of production
- Clients can upgrade on their own schedule
- Integrators read docs instead of emailing you
When teams call us
- An integration that breaks whenever the partner deploys
- An API with no versioning and external consumers
- Partners asking for documentation that does not exist
Process
How the work runs
The same four phases whichever engagement model you pick, each ending in something you can read.
Assessment
A read on the current system — what is load-bearing, what is dead, and whether it needs replacing at all.
- Dependency map
- Risk register
- Honest recommendation
Incremental plan
A route that keeps the business running. Big-bang rewrites are how migrations become two-year projects.
- Phased slices
- Rollback at each step
- No feature freeze
Migrate
Slice by slice behind a facade, with the old and new paths running together until the new one is trusted.
- Parallel run
- Data reconciliation
- Traffic shifting
Decommission
The old path removed once it is genuinely unused — verified from traffic, not from memory.
- Usage evidence
- Cost reduction measured
- Docs updated
Not sure which service your project needs?
Most useful projects cross two or three of them. Describe the outcome and we will map it.