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The legacy system still runs, but it slows you down: changes take months, the knowledge sits with a few people, licence and operating costs climb, and every integration becomes a struggle. We replace legacy systems in a controlled way, with a solid migration path, clean parallel operation, and a cutover that does not endanger daily business. From practice, not from the drawing board.
No company replaces a working system for fun. The typical triggers: the vendor ends support or maintenance, the last people who know the system retire, business units wait months for small changes, security updates are no longer possible, or the system simply blocks the next initiative, from a new sales channel to AI integration.
The good news: replacement does not have to be a big bang. Depending on system and risk we choose the right path, from step-by-step modernisation in place through migration to standard software to a rebuild with parallel operation. What matters is an honest look at data, interfaces, and dependencies before the first record is migrated.
Systems, data quality, interfaces, contracts, and the knowledge of key people. The result is a reliable picture of what the replacement really costs and what it delivers.
Modernise, standard software, or rebuild? We assess the options by risk, cost, and future-readiness and define the path, including sequence and intermediate steps.
Migrate data cleanly, move interfaces, run old and new in controlled parallel. With quality criteria, test runs, and a rollback plan instead of wishful thinking.
The switch on the cutover date, rehearsed and with clear go and no-go criteria. Then the part that is often forgotten: shutting down the legacy system properly, cancelling licences, clarifying archiving duties.
A heavily customised ERP brought back to a maintainable standard and upgraded: fewer dependencies, lower maintenance costs, ready again for new initiatives.
Read the case study → Case Study · Legacy replacementA legacy customer-search system replaced with performant, cost-efficient search technology, during live operation and with reliable data takeover.
Read the case study →Have further questions? Feel free to contact us directly via our contact form or by e-mail.
At the latest when support or security updates end, the knowledge depends on a few people, changes take disproportionately long, or the system blocks new initiatives. With an inventory we honestly assess whether modernising in place, standard software, or a rebuild is the most economical path.
No, and usually it should not be. We work with step-by-step migration paths and controlled parallel operation of old and new, with quality criteria, test runs, and a rollback plan. The cutover is rehearsed beforehand.
It is cleaned and migrated against clear quality criteria, not simply copied. The migration is often the best opportunity to get rid of legacy issues such as duplicates and dead records. We also clarify archiving and retention duties for the old system.
It depends on system size, data quality, and interfaces: from a few months for a single business system to multi-year programmes for central core systems. The inventory delivers a reliable time and cost frame before big commitments are made.
Because we know both sides: steering such programmes (over 150 projects since 2018, including ERP standardisation and legacy replacements) and the technology behind them, from data migration and interfaces to the target architecture.
A no-obligation first conversation with an honest assessment of effort, benefit, and risks. No pitch, just plain talk.