The Workload Migration (WLM) and Cloud Enablement project is seeking to address the migration of the majority of ESDCs applications that are currently hosted in legacy Shared Services Canada (SSC) data centres to Enterprise Data Centres or to Cloud, per the Government of Canada’s strategy to consolidate data centres across the Government of Canada (GC). The existing legacy data centres no longer meet SSC standards that are now in place in Enterprise Data Centres, creating a risk to several aspects of these applications such as their infrastructure, operational risks, IT security, and network related risks. Applications hosted in legacy data centres may also be limited in implementing future business needs. The applications currently hosted in legacy data centres will undergo thorough assessment while following the GC guidelines of Cloud First and TIME (tolerate, invest, move, eliminate) to determine their end-state hosting environments (Enterprise Data Centres or Cloud). The WLM project has several goals, the first of which is to serve as a risk response to the risks that have been identified should the movement of these applications not occur. Another goal of the WLM project is to improve the ESDC Security Posture and IT Service Delivery by moving applications to hosting environments that maintain a higher standard of security and compliance than in existing legacy data centres. Lastly, the WLM project seeks to help in the reduction of technical debt and in the modernization of applications, consistent with the departmental transformation agenda. This document seeks to recommend the adoption of the implementation of TIME assessment recommendations, at an approximate cost of $M over XX years. The realization of benefits that will occur as a result of this option include the improvement of IT security posture and compliance, the improvement of productivity, the reduction of risk exposure and versatility in application development. The options analysis described in this document has concluded that remaining with the status quo is not a feasible option, and that the option of a lift and shift will provide only part of the benefits, yet increase the departmental technical debt in coming years. The WLM Project has many risks listed throughout this business case. The number of applications in scope, their complexity and interdependencies are key considerations. ESDC’s expertise in Cloud technology and the differences between the targeted architectures (Cloud and Enterprise Data Centres) and current legacy data centres, as well as the Network complexity, are other important considerations. SSC and ESDC have identified mitigation measures that will be implemented. These measures, paired with a strong governance and continuous risk monitoring, will bring the risks described below to an acceptable level. 2.1 Problem/Opportunity The majority of ESDC systems are currently hosted in legacy Shared Services Canada (SSC) data centre facilities with aging infrastructure. These centres have not been designated as Enterprise Data Centres (thereby limiting further investment). The data centres are not designed to support 24/7 operations with 99.99% uptime and therefore are subject to outages and rely on older technologies to operate. This introduces infrastructure, operational, IT security, and network risks while greatly limiting the type of solutions that can be housed in these data centres to meet new business requirements. As part of the Government of Canada(GC) strategy to consolidate GC data centres and implement Cloud First, ESDC is initiating an assessment of 385 applications hosted within the Moncton and Montréal legacy data centres. This assessment will identify the appropriate disposition of each application as per the GC guidelines (i.e. Tolerate (maintain), Invest, Move, or Eliminate) and based on ESDC medium and longerterm business requirements. ESDC will develop a roadmap based on this assessment to address risks and known technical debt, in concert with the transformation agenda currently underway at ESDC. This involves migrating departmental applications from existing SSC legacy data centres into new hosting environments. ESDC will work with Treasury Board Secretariat (TBS) and SSC to identify target hosting environments, including Cloud based hosting services operated by the Government of Canada and private industry and at new, state-of-the-art data centres operated by SSC.