Custom APIs and business logic
Keep important rules consistent across applications and systems.
When the same business rule is implemented in several applications, integrations or manual steps, changes become risky and results can differ. We place those rules in testable business logic and expose them through clearly defined APIs.
What you may recognise
- Different applications implement the same rule differently or depend on undocumented behaviour.
- A web, mobile or back-office application needs a secure interface to client-specific data and decisions.
- Changes to one system repeatedly disrupt connected applications, integrations or important workflows.
How we approach it
- Identify which rules and data belong behind a stable interface and who owns each decision.
- Define authentication, authorisation, versioning, validation and failure behaviour before adding consumers.
- Implement automated checks and monitoring around the paths whose failure would interrupt important work.
What this should improve
- Applications use consistent rules instead of recreating them in several places.
- System boundaries and changes become clearer for internal teams and external consumers.
- Security, failures and compatibility are handled explicitly rather than through undocumented assumptions.
A focused first step
Start with one API or rule that causes recurring problems.
Choose one API or set of decisions that constrains an important workflow. Clarify its consumers, risks and expected behaviour, then implement or stabilise that boundary first.
The right starting point depends on what remains uncertain and what would happen if the software failed. We agree it for your situation rather than sell it as a fixed package.
See the reasoning in context
Discuss the situation
Start with the process, constraint or decision that needs attention.
A complete specification is not required. We can identify what needs to be understood or tested before you decide whether to commit further.