Services / 06 · API Development & Integration

Your systems should work together.

APIs and integrations that make your CRM, accounting, commerce and operations systems work together.

Tell Us Your Problem All services

Your businessone connected system

CRM

Accounting

Microsoft 365

Payments

Commerce

Database

Cloud

Partner API

Sound familiar?

The problems we solve.

Every disconnected system creates a person whose job is to copy data between them. We design APIs and integrations that move the right data, at the right time, with the right checks, so your tools behave like one system.

Disconnected systems

CRM, accounting, ecommerce and operations each hold part of the truth.

Double data entry

The same order or customer is typed into two or three systems.

Out-of-date information

Stock, prices or status are wrong because syncs are manual.

Fragile point-to-point scripts

Integrations nobody documented, that fail silently.

No API for partners

Customers and partners cannot connect to you programmatically.

Real-world use case

One update, synced across every business system.

Sync logevt_7f3a

Customer changed their delivery addresson the website

CRM contact updated200 OK

Billing address updated in accounting200 OK

Confirmation email sent200 OK

Order records updated200 OK

Driver app shows the new address200 OK

Your APIone integration layer

Website

CRM

Accounting

Database

Mobile app

A team planning how their business systems connect

OrdersController.cs

[HttpPost("orders/{id}/sync")]
public async Task<IActionResult> Sync(Guid id)
{
    var order = await _orders.GetAsync(id);
    await _crm.UpsertDealAsync(order);
    await _accounting.CreateInvoiceAsync(order);
    _audit.Log("order.synced", id);
    return Ok(new { status = "synced" });
}

What we build

What we build.

REST APIs

Well-designed, documented, versioned APIs for your products and partners.

Third-party integrations

Reliable connections to the SaaS tools you already pay for.

CRM integrations

Leads, contacts, deals and activity synced with the rest of the business.

Accounting integrations

Invoices, payments and customers synced with your accounting platform.

Microsoft Graph

Outlook, Teams, SharePoint, calendars and users connected to your workflows.

Payment gateways

Stripe, PayPal and regional gateways, with webhooks and reconciliation.

Cloud integrations

Queues, storage, functions and events across Azure and AWS.

System synchronization

Scheduled and event-driven sync with retries, conflict rules and alerts.

How it works

How we get from problem to solved.

01
System map
We map every system, what data it owns and where it needs to go.
02
Contract first
API contracts and data mappings agreed before implementation.
03
Build with observability
Retries, idempotency, logging and alerts built in from day one.
04
Monitor & evolve
Dashboards and alerts so failures are seen, and integrations keep up with vendors.

Built with

Chosen for your problem, your team and the systems you already run.

REST APIsMicrosoft Graph

.NET

ASP.NET Core

Node.js

Swagger

OpenAPI

Stripe

HubSpot

QuickBooks

ShopifyWebhooks

RabbitMQ

Azure

AWS

FAQ

API Development & Integration: common questions.

Should we use Zapier-style tools or custom integration?

No-code tools are great for simple, low-volume flows. When volume, reliability, security or complex logic matter, custom integration is usually safer and cheaper over time.

What happens when a third-party API changes?

We version integrations, monitor for failures and keep dependencies up to date as part of support.

Can you document our API for partners?

Yes. We produce OpenAPI specifications and developer documentation.