Legacy System Modernisation & Long-Term Support

The Challenge

Every successful software system eventually becomes a legacy system. Applications that were built to meet the needs of a particular era accumulate technical debt as frameworks age, security patches expire, and the developers who originally built them move on. Organisations are left with systems that are critical to daily operations but increasingly expensive and risky to maintain.

The temptation is to rewrite everything from scratch, but this is rarely practical for systems that must remain operational throughout the transition. What organisations need is a partner who understands old and new technologies equally well -- someone who can stabilise existing systems, gradually modernise their architecture, and provide the long-term continuity that keeps knowledge from being lost between contract cycles.

Our Approach

Digital Tactics specialises in the kind of patient, systematic modernisation that legacy systems demand. Rather than proposing risky big-bang rewrites, we assess the current state of a system, identify the highest-risk components, and develop a phased migration plan that keeps the application running throughout. We bring deep expertise in PHP, WordPress, and the broader LAMP stack -- technologies that power a vast number of legacy web applications.

Our long-term support model provides clients with continuity that is rare in the agency world. We maintain detailed documentation, knowledge bases, and handover materials so that institutional knowledge is never concentrated in a single person. For systems that need to integrate with modern services, we build API layers and middleware that bridge old and new without requiring a complete rewrite of the underlying codebase.

• Phased modernisation plans that keep systems operational throughout the transition
• Deep PHP, WordPress, and LAMP stack expertise for the technologies most legacy systems rely on
• API layer and middleware development bridging legacy and modern architectures
• Long-term support contracts with comprehensive documentation ensuring knowledge continuity

Projects & Clients

Our longest-standing legacy support engagement is with Endemol/Banijay, where Digital Tactics has provided continuous development and maintenance support for over 16 years. This relationship has spanned the full lifecycle of dozens of TV show websites and digital platforms, from initial build through peak traffic operation to eventual retirement or migration. The Shine Legacy Systems Support engagement specifically focused on stabilising and maintaining systems inherited through corporate mergers, where documentation was sparse and original developers were no longer available.

Across our portfolio, many client relationships extend well beyond the initial project. We provide ongoing maintenance, security patching, PHP version upgrades, WordPress core and plugin updates, and incremental feature development for systems that their owners depend on daily. This long-running maintenance work is unglamorous but essential -- it is the foundation that keeps businesses operating while they plan their next strategic move.

Results & Impact

• 16+ year continuous partnership with Endemol/Banijay maintaining and evolving broadcast digital platforms
• Successfully stabilised inherited legacy systems with minimal documentation through systematic reverse-engineering
• Zero-downtime PHP version migrations and WordPress major upgrades across multiple client systems
• Long-running maintenance contracts providing stability and continuity that outlasts individual team members