Application modernization

Your application is ageing.Your business isn’t.

End-of-support technologies, technical debt, fear of breaking everything with each change: we modernize your application step by step while it keeps running, with an Etixio tech lead from diagnosis to go-live.

Let’s talk about your application Or book a 30-min call with our CTO

Common situations:

End-of-support frameworkTechnical debtFew testsDreaded deploymentsKnowledge held by a few

extranet.your-company.comService available

“Customer orders” screen6/6 modules migrated

BeforePHP 5.6 · jQuery

orders.php

<?php
$id = $_GET['client'];
$res = mysql_query(
"SELECT * FROM orders
WHERE client=$id");
$o = mysql_fetch_row($res);
echo "<td>$o[1]</td>";

AfterSymfony 7 · PHP 8.3

OrderController.php

#[Route('/orders/{id}')]
public function list(
Client $client,
OrderRepository $repo
): JsonResponse {
return $this->json(
$repo->byClient($client));

Extranet modules

Customer loginLegacyIn progressMigrated
Product catalogLegacyIn progressMigrated
OrdersLegacyIn progressMigrated
InvoicingLegacyIn progressMigrated
Delivery trackingLegacyIn progressMigrated
Accounting exportsLegacyIn progressMigrated

Test coverage

81%12% at start

Measured by CI on every build

Requests served by the new version

Old 0%New 100%

0%10%50%100%

Per-module routing via the reverse proxy, rollback possible.

Service interruption observedNone

Today

End-of-support technologies
A framework, language or libraries that no longer receive updates.
Every change costs more
Regressions, growing lead times, releases that keep slipping.
Dreaded releases
Few tests, manual steps, the fear of breaking everything.
Knowledge held by a few
Only a few people know the code, one absence slows everything down.

With progressive modernization

Up-to-date versions
Framework, language and dependencies upgraded in an order that limits risk.
Module-by-module rework
The most fragile parts are reworked one by one, the rest keeps running.
Safer releases
Automated tests on critical paths, continuous integration and monitoring.
Documented code that stays yours
Knowledge is shared. Your code, access and data stay with you.

Our method

Modernize step by step, with rollback at every stage.

Step 1
Audit what exists
Code, dependencies, tests, deployments, incidents: we examine the application before proposing a rewrite or a targeted fix.
DeliverableDiagnosis and reasoned options
Step 2
Plan the path
Module order, data migration, rollback options: each step has a verifiable goal.
DeliverableModernization plan, first scope at a fixed price
Step 3
Modernize and switch over
Tests on critical paths, then modules reworked one by one, while the application keeps serving your users.
DeliverableModules reworked, tested and documented

Let’s talk about your application Or book a 30-min call with our CTO

Audit deliverables

Your existing system, understood.A modernization path.

A map of the application: modules, dependencies and exchanges with other systems.
A reasoned diagnosis and compared options: fix, migrate progressively or rewrite.
An ordered path, with a first scope costed at a fixed price.

Your application is ageing.Your business isn’t.

Today

With progressive modernization

Modernize step by step, with rollback at every stage.

Audit what exists

Plan the path

Modernize and switch over

Your existing system, understood.A modernization path.

Let’s talk about your application.