System interfaces

API Development & Integration 

An API is an operational contract: its errors, limits, evolution, and recovery behavior matter as much as its successful response shape.

How we use it

A technology choice is useful only when it improves the product or its operation.

We design APIs around consumer tasks, domain ownership, security, and change. Synchronous calls, events, webhooks, and batch exchange are selected according to timing and reliability needs rather than preference.

Architecture decisions
01Architecture decision

Contract design

Model resources, commands, errors, pagination, and idempotency around consumer behavior.

TechnologyAPI Development & Integration
Where it mattersPartner integrations
02Architecture decision

Authorization

Check permission at the resource and action boundary, not only at the gateway.

TechnologyAPI Development & Integration
Where it mattersMobile and web backends
03Architecture decision

Evolution

Prefer compatible change and define a version and deprecation policy where contracts must diverge.

TechnologyAPI Development & Integration
Where it mattersPayment and billing connections
04Architecture decision

Integration recovery

Design timeouts, retries, deduplication, replay, reconciliation, and support visibility.

TechnologyAPI Development & Integration
Where it mattersERP and CRM integration
Where it fits
01

Partner integrations

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02

Mobile and web backends

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03

Payment and billing connections

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04

ERP and CRM integration

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05

Public developer platforms

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06

Event-driven workflows

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Engineering choices

Choose the architecture for the product you need to run.

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