The 7Rs of Migration: A Comprehensive Approach
The “7Rs of migration” (Rehost, Refactor, Rearchitect, Rebuild, Replace, Relocate, Retire) are the theoretical framework used to guide decisions during the systems migration process.
When analysing each “R,” always within the context of mainframe modernisation, a range of possibilities is opened that must be carefully considered in every organisation.
Rehosting applications, originally from the mainframe, into more modern environments such as the cloud, with the aim of improving accessibility and reducing infrastructure costs.
Refactoring applications to be modular and leverage contemporary technologies such as containers and microservices, facilitating scalability and maintenance.
Rebuilding the architecture of applications to integrate modern technologies such as artificial intelligence and machine learning, aiming to enhance efficiency and business intelligence.
Rebuilding applications from scratch, utilising modern frameworks and agile methodologies to ensure compatibility with future updates.
Replacing mainframe applications with enterprise software solutions (ERP, CRM) that better align with current and future business needs.
Relocating applications to strategic locations, often in different geographies, to enhance latency and efficiency in accessing data.
Thoroughly reviewing functioning modules to decide the retirement of obsolete applications and consolidating systems to reduce complexity and operational costs.