IT Systems Integration

Your systems already hold the data you need. We connect business software — ERP, CRM, accounting, cloud and legacy applications — so your team stops moving it by hand.

Talk to an Integration Engineer See How It Works

The Spreadsheet Between Your Systems Is a Symptom.

Most growing companies don’t have a software problem. They have a connection problem. The ERP knows what was ordered, the accounting system knows what was invoiced, the CRM knows what was promised — and none of them tell each other. So somebody exports a report every Monday, pastes it into a spreadsheet, and that spreadsheet quietly becomes the system of record.

That workaround costs more than it looks like. Someone spends hours a week on data entry that software should handle. Two systems disagree and nobody knows which is right. A customer gets billed for the wrong quantity because the order never made it across cleanly. And every new tool you add makes the web of manual hand-offs a little worse.

IT systems integration removes the hand-off. Instead of people carrying data between systems, the systems pass it themselves — on a schedule you set, with rules you control, and a record of what moved when something looks wrong.

  • API integrations between business applications
  • Data integration and reporting across systems
  • Cloud-to-on-premise and hybrid connections
  • .NET, Azure, SQL Server | Built to be maintained
Business systems connected through software integration, showing data moving between applications without manual entry.

What We Integrate

Software system integration takes different forms depending on what you run and how current the systems are. Most of our work falls into these six.

API Integrations

Two applications talking directly through a documented interface. The cleanest option when both systems expose a modern API, and the easiest to maintain when either one changes.

Data Integration

Pulling records from several systems into one place so reporting reflects the whole business instead of one department. Often the fastest route to a number leadership can trust.

Cloud and Hybrid

Connecting on-premise systems to cloud applications, or to each other across environments. Common when part of the business has moved to Azure and part has not.

ERP and Accounting

Orders, invoices, and inventory moving between your ERP and finance systems without re-entry. QuickBooks, Dynamics, SAP, or an ERP somebody built for you fifteen years ago.

CRM and Line-of-Business Apps

Sales, service, and operations sharing one view of a customer. Sold, provisioned, invoiced, and supported without three teams keeping separate lists.

Devices and Shop Floor

Machines, scanners, and sensors reporting into a central system. Where integration stops being back-office plumbing and starts affecting throughput. See manufacturing software.

How We Approach an Integration

Integrations fail on the details nobody mapped, not on the code. So we spend the early effort on what moves where.

1. Map the Data

Which system owns which field, what happens when they disagree, and which manual steps exist today. This is where most of the real decisions get made.

2. Design the Connection

Real time or scheduled, one direction or both, and what happens when a system is unavailable. Chosen against your tolerance for stale data, not by default.

3. Build and Prove It

Built API-first and tested against your real data before it touches production. You see it work on your own records, not on a demo dataset.

4. Monitor It

An integration nobody watches is a silent failure waiting to happen. We add logging and alerting so a broken sync surfaces immediately, not at month end.

Signs You Need Systems Integration

You don’t need every system connected. These are the situations where it pays for itself quickly.

  • Someone re-types the same data into two systems
  • Two reports on the same question give different answers
  • A recurring export-and-paste routine has become official
  • Month-end close waits on manual reconciliation
  • You bought software that never got connected to anything
  • An acquisition left you running two of everything
  • Part of the business moved to the cloud and part didn’t
  • Customer-facing staff can’t see order or billing status
What Integration Changes

When the Monday Spreadsheet Goes Away

Problem

Orders entered in one system, invoiced in another, and reconciled by hand each week. Discrepancies found late, after a customer had already been billed.

Solution

A scheduled, two-way integration with clear ownership of each field, validation on the way through, and alerting when a record fails to move.

Outcome

Reconciliation becomes an exception report instead of a weekly task, billing errors get caught before they reach the customer, and both systems agree without anyone maintaining them by hand.

IT Systems Integration FAQ

Why CSW Solutions

20+ Years. Zero Shortcuts.

We’ve been connecting business systems for over two decades, including the older platforms nobody documents anymore. That experience shows up in the mapping stage, where integrations are won or lost.

Owner-Led, Start to Finish.

The senior people who design your integration are the same people who build it. No hand-offs, no offshore teams, one point of accountability when something needs a decision.

Chicago-Based. US-Only.

Same city, same time zone. When an integration needs attention during your business hours, we’re actually available in them.

Want the background before you talk to anyone? We wrote a full guide to the types of IT system integration, with examples. If your integration is part of a larger build, that usually belongs under custom software development.

Which Two Systems Should Be Talking?

Tell us where the manual step is. We’ll tell you whether it can be automated, what it would take, and whether it’s worth doing.

Talk to an Integration Engineer
← Back to Software Development