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Your 15-year-old system is holding you back. We modernize legacy platforms and build new ones, cloud-native, scalable, and built to last.
Legacy systems were built for the way business worked 10–15 years ago. They’re slow, expensive to maintain, and impossible to scale. But replacing them doesn’t have to be a rip-and-replace nightmare.
We specialize in seamless migration from legacy platforms to modern, cloud-native architecture, keeping your business running throughout the process. No big-bang cut-over. No weeks of downtime.
We embed AI where it moves the needle, not as a gimmick. Automating the repetitive parts of your workflows so your team focuses on the work that actually matters.
Our engineers use AI-assisted development tools. That means faster delivery and tighter iteration cycles for you. But the problems that sink software projects have never been about how fast someone can type.
Most software projects fail in the first two weeks, even before a single line of code is written. Requirements that aren’t fully understood, scope that covers half a workflow, processes the client has never had to document because the team just knew. We spend real time here. Fixing a requirements gap mid-build costs ten times what it costs to catch it in discovery.
AI can generate code quickly. It can’t tell you whether the architecture will handle your data volume in three years, or whether your integration design will survive the next API change. That judgment comes from building real systems for real businesses and watching what breaks when the assumptions don’t hold.
Shipping is the beginning, not the end. Edge cases surface. Requirements evolve. Business conditions change. The team that built your system stays with it because they understand it the way only the people who lived through the build can. We don’t hand off and disappear after launch day.
From enterprise platforms to customer-facing apps, here’s where CSW’s experience shines.
Dependable, scalable .NET applications. We’ve shipped .NET solutions across web, cloud, and desktop platforms for over a decade, it’s our strongest stack.
End-to-end web apps built for security and performance. Portals, dashboards, and internal tools for complex systems that handle real enterprise workloads.
Large-scale, mission-critical applications. We understand the architecture challenges that come with enterprise-level data, users, and uptime requirements.
Custom eCommerce platforms built to scale with your business. Product catalog management, payment processing, and order fulfillment, all integrated.
Complex data architectures done right. SQL Server, query optimization, data migrations, and reporting systems that give you real business intelligence.
Desktop, mobile, or hybrid, we build applications that work across platforms. Front-end and back-end development are all handled by the same experienced team.
Replacing a 15-year-old system doesn’t have to mean 6 months of disruption. Here’s how we approach it:
Twenty years and still going strong in software and IT solutions across Chicago and the Midwest means we’ve seen the operational realities of businesses like yours, not just the demo version of them.
Production tracking, inventory systems, and custom MES platforms. We understand shop floor logic and the data flow between operations and back-office.
Marketplace integrations, custom storefronts, product data pipelines, and order management systems built to handle real catalog complexity at scale.
Client portals, workflow automation, and internal tools for law firms, consulting groups, and financial services businesses with compliance-sensitive data.
Reporting systems, donor platforms, and operational tools for organizations where data accuracy and access control are non-negotiable requirements.
Custom ordering portals, pricing engines, and ERP integrations built around the reality of B2B sales cycles and multi-tier account structures.
Member management systems, event platforms, and learning tools for educational institutions and professional associations with complex membership tiers.
An eCommerce client was migrating product data from their legacy system into a new marketplace platform. The project was scoped, development was underway, and work was moving.
In a weekly status call, the client mentioned almost in passing that the goal was a “one-touch product listing process” with product data, pricing, descriptions, images, and videos all flowing automatically. Our scope didn’t include images. Nobody had asked what a complete listing actually required.
We stopped, held a requirements session, and rebuilt the scope before writing another line of code. Discovery done right, before it becomes a restart.
Most software firms hand you off. A salesperson closes the deal, a project manager you’ve never met runs the engagement, and developers you’ll never speak to, writing the code. When something goes wrong, nobody clearly owns the problem and you’re paying more for a solution from strangers.
CSW is different by design. We’re a Chicago-based firm with a 20+ year track record and a fully in-house team. The senior engineers who scope your project are the same people who build it. You have one point of contact from discovery through go-live, and they have real authority to make timely decisions, not just relay messages.
We specialize in the Microsoft stack: Azure, .NET, SQL Server. Not because it’s what we happened to learn, but because for the SMB and mid-market clients we serve, it’s the right foundation: mature, well-supported, cloud-native, and deeply integrated with the Microsoft 365 environment most businesses already run.
It depends on scope, but most projects fall into three ranges. A focused internal tool or integration typically runs 6–12 weeks. A full web application or customer-facing platform is usually 3–6 months. Legacy modernization projects — where we’re rebuilding an existing system with a parallel build approach — typically run 4–9 months depending on complexity. We give you a realistic timeline in writing after the discovery phase, not before.
We don’t publish fixed prices because the honest answer is: it depends on what you need. A targeted automation can be $15–30K. A full enterprise platform can be $150K+. What we will do is give you a clear, itemized estimate after a discovery engagement — so you understand exactly what you’re buying and why it costs what it costs. No vague ranges, no surprises mid-build.
Yes. We work with clients across the US. Most of our engagement is remote, and it works well — we run weekly demos, maintain active project channels, and keep clients closely involved throughout. For clients who prefer on-site involvement during key phases (discovery, UAT, go-live), we accommodate that too.
A rewrite replaces the system from scratch. Modernization preserves the business logic that works and replaces the architecture around it. We almost always recommend modernization where possible — it’s lower risk, lower cost, and keeps the business running throughout. A rewrite is only the right answer when the existing codebase is beyond economical repair. We tell you which one is appropriate after we’ve actually reviewed your system.
Yes. At CSW, the senior engineers who scope the project are the same people who build it. You will have direct access to the technical team, not just a project manager acting as an intermediary. This matters most when requirements evolve mid-build — which they always do. When your developers understand your business directly, changes get handled correctly the first time.
Explore specific modernization scenarios:
CSW Solutions helped us build an intuitive, dealer friendly portal with the functionality we needed to efficiently administer our programs.
Jacob Bryce — CSW Client
A software audit is the fastest way to understand what you have, what it’s costing you, and what a modern replacement would look like.
Schedule a Software Audit