During which phase of the systems development life cycle (SDLC) does an organization turn a...

The Design phase of the SDLC shifts the project from a logical/business focus to a physical/technical perspective. In this phase, system architecture, database designs, user interfaces, and network requirements are defined to provide the technical blueprint for system development.

Option A (Maintenance): Focuses on updates and fixes after deployment.

Option B (Development): Involves building the system using code.

Option D (Implementation): Deploys the system into production.

Thus, the phase that defines the architecture is the Design phase.