Cloud Adoption Framework enterprise-scale design principles
The enterprise-scale architecture prescribed in this guidance is based on the design principles described here. These principles serve as a compass for subsequent design decisions across critical technical domains. Familiarize yourself with these principles to better understand their impact and the trade-offs associated with nonadherence.
Subscriptions should be used as a unit of management and scale aligned with business needs and priorities to support business areas and portfolio owners to accelerate application migrations and new application development. Subscriptions should be provided to business units to support the design, development, and testing of new workloads and migration of workloads.
Azure Policy should be used to provide guardrails and ensure continued compliance with your organization's platform, along with the applications deployed onto it. Azure Policy also provides application owners with sufficient freedom and a secure unhindered path to the cloud.
Single control and management plane
Enterprise-scale architecture shouldn't consider any abstraction layers, such as customer-developed portals or tooling. It should provide a consistent experience for both AppOps (centrally managed operation teams) and DevOps (dedicated application operation teams). Azure provides a unified and consistent control plane across all Azure resources and provisioning channels subject to role-based access and policy-driven controls. Azure can be used to establish a standardized set of policies and controls for governing the entire enterprise estate.
Application-centric and archetype-neutral
Enterprise-scale architecture should focus on application-centric migrations and development rather than pure infrastructure lift-and-shift migrations, such as moving virtual machines. It shouldn't differentiate between old and new applications, infrastructure as a service, or platform as a service applications. Ultimately, it should provide a safe and secure foundation for all application types to be deployed onto your Azure platform.
Align Azure-native design and roadmaps
The enterprise-scale architecture approach advocates using Azure-native platform services and capabilities whenever possible. This approach should align with Azure platform roadmaps to ensure that new capabilities are available within your environments. Azure platform roadmaps should help to inform the migration strategy and enterprise-scale trajectory.
Be prepared to trade off functionality because it's unlikely that everything will be required on day one. Use preview services and take dependencies on service roadmaps to remove technical blockers.