What if your application assets became a performance lever?

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Join us for an exclusive event:
« Don’t rewrite the past. Upcycle it ! »

Thursday, September 25, 2025 at 9:30 a.m.

Event

Don’t rewrite the past
Upcycle it!

Discover L4F

What if your current applications became a driver of innovation rather than a hindrance?

We’ll introduce you to our Legacy for the Future (L4F) methodology, designed to transform your application portfolio into a strategic asset.
Modernize without starting from scratch.

What you will discover:

Uncover hidden potential: Learn how to audit your current applications and turn that insight into a clear, prioritized action plan.
Take it one step at a time: Learn why incremental improvements are often more effective than complete overhauls.
The result?
Rapid progress with minimal disruption.

Strengthen your teams: We show you how to train your employees to promote smooth transitions, sustainable autonomy and a culture of continuous innovation.

At the Brussels Mix
Bd du Souverain 25/1, 1170 Watermael-Boitsfort

Thursday, September 25, 2025

From 9:30 a.m. Reception & welcome words

Event Registration

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What we do

“An accurate diagnosis, a lasting transformation”

L4F – A Legacy for the Future is our approach to transforming your existing applications into real assets: modernizing, securing, and enhancing value. Rather than rewriting everything, we give them a second life. Less technical debt, more agility, without starting from scratch—all while ensuring reliability, security, and resilience.

Technical and business audit

We screen your entire application park: code, architecture, uses. The objective? Detect pain points, identify opportunities, and provide a clear, shared, and prioritised diagnosis — to turn your legacy solutions into drivers of innovation.

Iterative approach

We favour gradual developments. At each sprint, we propose concrete, realistic and measurable actions. No “big bang”, but a gradual path towards a modernised architecture without interruption.

Upskilling of teams

We support your employees so that they become autonomous: training, co-development, sharing of tools. A sustainable strategy to sustain skills and transformation.

Our approach

Don’t rewrite the past, but upcycle it

We value what already works. Modernisation doesn’t always involve a total replacement, but a gradual restoration of trust in your systems.

A three-step method

Audit – Prioritize – Control: at each phase, we use personalised indicators, actionable reports and a clear roadmap, focused on value and business uses.

Agility, rapid impact and continuity

Modernisation means favoring short, reliable iterations aligned with business needs. The first improvements are visible within the first few weeks.

Why choose 5thfloor?

An iterative field approach, supported by 50 experienced consultants. We integrate AI to diagnose, optimise, and modernise your applications without disruption. Expected results:

Up to 50% reduction in maintenance costs

More budget for innovation

More stable and secure systems

More autonomous and committed teams

A smooth transformation, even in a critical context

Ready to turn your legacy into a digital legacy?

Let’s talk

FAQ

L4F

What is application “legacy”?

These are critical, complex applications that are often expensive to maintain. Modernised, they are stabilised and become levers of innovation, not brakes.

Why not rewrite everything?

Starting from scratch is costly, risky, and leads to a loss of business knowledge. Upcycling makes it possible to restore, optimize, and preserve pre-existing value.

What does a legacy audit at 5th floor consist of?

We analyse code, architecture, uses, dependencies, sometimes with AI support (generative-AI type). We produce a clear state of play, technical scores, and targeted recommendations.

Isn’t there a service interruption?

No. We operate in parallel with your activities, with your teams, guaranteeing operational continuity.

What tools do you use?

Automated diagnostics, reverse documentation, dependency analysis, custom migration scripts, testing frameworks, AI for analysis.

Do you train the teams?

Yes. Workshops, mob programming, personalized support: everything to strengthen autonomy and skills in the long term.

Do you work in the public sector?

Yes. Since 2017, we have mastered the technical, financial and regulatory constraints specific to the public sector.

First steps?

We launch a first sprint: installation of tools, audit of a critical app, delivery of a prioritized roadmap.

Is it compatible with a cloud migration?

Yes. We prepare your applications for the cloud or microservices through a progressive and controlled approach.

Should the entire fleet be modernised at once?

No. We prioritize with you. The first successes guide the rest, in an organic and targeted approach.