Modernize legacy systems with
confidence

A step-by-step course to help software professionals modernize critical systems, safely, systematically, and successfully.

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Why modernizing legacy systems matters

Old software holds your business back: costing more, exposing you to risks, and slowing your growth. Modernizing your systems is not just a technical upgrade; it’s a strategic move to reduce costs, strengthen security, and stay competitive in a fast-changing market.

Old Code Is Expensive Code
Legacy systems demand constant patching, workarounds, and specialized knowledge. Over time, maintenance becomes more expensive than innovation. Modernizing reduces costs, simplifies updates, and frees up your team to focus on value—not survival.
Your Business Can’t Wait

Legacy systems block integration with new tools, slow down product development, and limit scalability. By modernizing, you unlock new capabilities, reduce time-to-market, and stay competitive in fast-moving markets.

Security Gaps Are Growing Wider
Outdated systems often lack modern security protocols and are vulnerable to breaches, compliance issues, and operational failure. Modernization strengthens security, aligns with current standards, and prepares you for future threats.

What are the struggles?

Every change feels risky

Legacy systems often lack tests, documentation, and clear architecture. Even small updates can cause unexpected bugs—making teams hesitant to touch anything, which slows down progress and innovation.

Old tech, shrinking talent pool

These systems often run on obsolete platforms or languages few developers understand. Recruiting or training for them is expensive, and team knowledge becomes harder to retain over time.

Hard to connect with modern tools:

Legacy software often wasn’t designed to integrate with cloud platforms, APIs, or modern analytics tools—making it hard to support new features, channels, or digital transformation efforts.

Keeping it alive gets more expensive

Maintaining legacy systems means patching holes, hunting bugs, and dealing with slow performance. Over time, the cost of upkeep outweighs the cost of modernizing—especially when business growth is at stake.

Maintaining an outdated codebase
can become a problem.

Maintaining an old codebase costs you money, limits your possibilities and hinders opportunities. You want to unlock the value of your application trapped in obsolete technology.

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Having an obsolete codebase means:

Slower development, rising maintenance costs, and increasing risk. What once worked reliably now holds your team back—making every change feel risky, blocking integration with modern tools, and draining time that could be spent on innovation. Over time, it becomes harder to maintain, harder to scale, and even harder to replace
High time to market

When you have outdated technologies, it’s difficult to react faster to market and demand changes with a new competitive offer. New companies can do much more with less effort.

Difficulties in attracting talents

Your internal developers are about to retire, and it will be challenging to find new skilled developers or attract young talents interested to learn a legacy language.

Costs and time costrain

Modernizing a legacy language can be a resource-intensive and time-consuming process. Balancing the need for modernization with business priorities and budget limitations.

Outdated technologies

You will find it challenging to integrate with new features and bring up problems regarding code complexity, lack of documentation and security vulnerability.

Expensive hardware & maintenance

An obsolete code needs costly hardware or licenses to run it. Also, the supplier rarely updates the platform or has stopped maintenance.

Learn how to follow solutions
without breaking things. What you’ll get with
this course

Modernizing legacy systems doesn’t have to mean risky rewrites or late-night deployments. This course gives you a structured, low-risk approach to transforming your codebase, one decision, one step at a time. You’ll learn how to preserve what works, rebuild what doesn’t, and align tech choices with real business needs.


Strumenta delivers this training on request. Please contact us to book this course for your team. 

01How to assess legacy systems without guesswork
Identify technical debt, hidden risks, and business-critical components—so you can plan with confidence, not assumptions.
Understand when to refactor, rewrite, or redesign—and how to avoid costly one-size-fits-all solutions.
Learn patterns like the Strangler Fig, interface adapters, and modular migration to reduce risk and deliver value early.
Bridge the gap between technical insight and business priorities with clear language, visuals, and strategic framing.

Where the material in this course comes from

Taught out of migrations we run

Legacy modernization is our own working practice, not a subject we researched to teach: the same people run the Migration Blueprint assessments and the migrations that follow them. Our RPG engine alone has been exercised on more than 30 million lines of production code.

Decisions, not slogans

The course works through when to refactor, when to rewrite and when to redesign, and what each choice costs you later. Strangler Fig, interface adapters and modular migration are covered as decisions with preconditions, which is the part an architecture diagram leaves out.

It is written down as well

Migrating RPG Code to Modern Languages, 236 pages, published in October 2025, covers the same ground for IBM i estates. You can read it before deciding whether the course is worth a week of your team’s time. About the book.

Booked for a team, run against your systems

We deliver this training on request rather than selling it as a recording, so the examples discussed can be the systems your team actually has to modernize. Contact us to book it.

Ready to lead your legacy transformation?

Enroll now to gain the skills, strategies, and confidence to modernize your software systems—with less risk and more control.
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