The Deloitte report “Tech Trends 2015 – The fusion of Business and IT” found that on average, 80 percent of time, energy, and budgets are consumed by the maintenance and support of core legacy systems. Within these core systems, unwanted technical debt and complexity likely exist, with systems at various stages of health, maturity, and architectural sophistication.
But the legacy core can also be a strategic foundation that enables experimentation and growth.
As focus shifts from performing business processes to enabling innovation, reinvented core systems can form the foundation for growth and new service development
Deloitte found that leading organisations are building a roadmap for a renaissance of their core — focused not on painting their legacy as the “dark ages,” but on revitalizing the heart of their IT and business footprint.
The Deloitte study found that adopted approaches to core renaissance vary from wholesale transformational efforts to incremental improvements tacked onto traditional budgets and projects. But regardless of how systematic or tactical they are, core renaissance responses typically include a combination of the following five approaches:
Replatform: Replatforming efforts typically centre on upgrading the core application or implementing new solutions on the underlying platform upon which the application runs. This could involve technical upgrades, migration to latest software releases, or instance consolidation. While it may appear less invasive than other approaches, replatforming is rarely a simple “lift and shift” exercise. It typically requires a workload-by-workload analysis and surgical intervention to prepare for and achieve the shift.
Remediate: Similar to replatforming, remediation shifts attention to the internal workings of systems. For custom solutions, this could involve rewriting chunks of code to reverse technical debt. It might involve rewriting or wrapping interfaces to promote reuse, making the necessary logical and architectural changes to allow core data and transactions to be exposed via mobile, social, or cloud apps.
Revitalize: In some cases, the internal business logic and transactional capabilities are rock solid, but the usability of the systems causes pain points—for instance, because of poor user experience design, long response times, or a lack of mobile versions to support business when and where it actually occurs.
Replace: Sometimes, the right answer is to recast the solution landscape by replacing parts of the portfolio with new solutions.
In part two of this discussion we will discuss how cloud computing is radically changing the dynamics.
Read more on the Core Renaissance at Deloitte University Press: Click on this link