Legacy Modernization without a big-bang that halts your operation
We modernize your legacy system piece by piece with the strangler fig pattern: we replace it part by part while the operation keeps running. Start with a free assessment: we evaluate your system and define a phased path and a fixed budget before you commit to anything.
- Free modernization assessment, no commitment
- Strangler fig: phased, no big-bang, no operational downtime
- Client code 100% yours · CMMI Level 2 · nearshore MTY + Texas
CMMI Level 2 · 5.0★ on Clutch · 200+ projects · Monterrey + Texas · Code 100% yours
Why modernize with iTechDev?
Strangler fig, not a big-bang rewrite
We replace the legacy system piece by piece behind a facade, while old and new coexist. The operation never stops, and each phase delivers value on its own.
No operational downtime
One-shot rewrites fail expensively. We modernize by modules with APIs as a bridge, so you can retire the legacy gradually with no risk of a go-live that takes down the business.
We're a software factory, not patchers
We build the replacement to CMMI Level 2 standards: architecture, APIs/microservices, tests and CI/CD — software that can be maintained, not another legacy in five years.
Your system, your property
The code, repository and access are 100% yours from the first commit. No vendor lock-in, no black boxes.
What your modernization assessment includes (free)
A concrete deliverable you can use even if you decide not to modernize with us.
How it works
Reach out
Leave your details in the form or message us on WhatsApp. We reply during business hours.
Assessment session
We review your legacy system, dependencies, data and goals in a session with our software architects.
Deliverable + path
We hand you the assessment with the decomposition plan, replacement order, phases and a fixed budget.
Decide with data
You decide with real information. If we move forward, we start in phases with demos, without touching the operation.
Explore our full software factory service
Legacy modernization is one part. We also do MVP development, web development and APIs/microservices. Explore the full mini-site.
Request your legacy modernization assessment
We modernize your legacy system piece by piece with the strangler fig pattern: we replace it part by part while the operation keeps running. Start with a free assessment: we evaluate your system and define a phased path and a fixed budget before you commit to anything.
- Assessment of your legacy system (architecture, dependencies, risks)
- Decomposition plan by modules for the strangler fig pattern
- Design of the API layer that connects old with new
- Replacement order: what gets modernized first and why
CMMI Level 2 · 5.0★ on Clutch · 200+ projects · Monterrey + Texas · Code 100% yours
Request your legacy modernization assessment
How is your legacy system today?
Frequently asked questions
What is the strangler fig pattern?
It's modernizing a legacy system in parts: you put a facade in front, replace one module at a time with a new version and gradually redirect traffic, until the legacy is empty and gets shut off. Old and new coexist during the transition, so the operation never stops.
Why not rewrite everything at once?
Big-bang rewrites are expensive and risky: they take months without delivering value and the go-live concentrates all the risk in a single point. Phased modernization delivers value at each stage, reduces risk and lets you retire the legacy gradually.
Can you modernize without operational downtime?
Yes, that's the point of strangler fig: each new module goes to production behind an API layer while the rest of the legacy keeps running. There is no "turn everything off and switch on the new system" day.
Does iTechDev do the development or just the plan?
Both. We deliver the assessment with the path, and if we move forward, we build the replacement in-house with CMMI Level 2 standards, code review and tests. The code we produce is 100% yours, with no vendor lock-in.
Request your legacy modernization assessment
CMMI Level 2 · 5.0★ on Clutch · 200+ projects · Monterrey + Texas · Code 100% yours