BDM Architecture Principle 1: Principle: New Target Operating Model and service continuity during the transition Statement: BDM will implement a new Target Operating Model designed for the future. Transition will be gradual and iterative ensuring service continuity. Rationale: BDM service modernization and service ambitions cannot be realized with technology modernization only – a new Operating Model is required. BDM will modernize services that deliver over $122B annually to Canadians, many of which are mission critical as they support most vulnerable clients in the time of need. Disruption to the delivery of these services is unacceptable. Implications: • Architectures and solutions proposed as strategic and target state will be evaluated against the new Target Operating Model. • To ensure service continuity, co-existence model where new solutions and legacy operate in parallel will be required. • Co-existence model inherently leads to a greater complexity than the current or target state. Among different viable architectures that are fit to support the new Target Operating Model and co-existence, less complex ones will be favoured over more complex options. • Evaluation of architectures and proposed solutions in regards to their ability to integrate and operate in a co-existence model will be presented to BDM-ARC.