Google Cloud Well-Architected Framework
Six pillars for reviewing cloud architecture and operations
A six-pillar review framework for designing and operating secure, reliable, efficient, high-performing, cost-effective, and sustainable cloud workloads.
Google Cloud's Well-Architected Framework helps teams review how a system runs, not just what features it delivers. It organizes decisions across six pillars: operational excellence; security, privacy, and compliance; reliability; cost optimization; performance optimization; and sustainability.
What it adds
The framework applies to cloud-native applications, migrations, and hybrid or multicloud deployments. Its domain-specific perspectives connect the pillars rather than treating each as an isolated checklist. For example, the financial-services perspective explains that data-residency rules can limit failover locations, which in turn affects recovery options. A security or compliance decision can therefore change a reliability design.
Five core principles shape that review:
- Design for change: make small changes, collect fast feedback, and measure delivery performance.
- Document the architecture: record current structure, use cases, decisions, and change history so later reviews have context.
- Prefer simplicity and managed services: reduce operational burden where a managed capability fits the workload.
- Decouple components: isolate upgrades, security controls, reliability goals, monitoring, performance, and cost decisions.
- Keep compute stateless where practical: move durable state into appropriate shared systems so instances can restart and scale independently.
A practical review sequence
One way to apply the framework is:
- Start with a current architecture diagram and the user outcomes the workload must protect.
- Review every pillar with engineering, operations, security, finance, and sustainability stakeholders. Record accepted risks, owners, and measurable targets.
- Convert findings into prioritized work rather than treating every recommendation as mandatory.
- Revisit the review after material workload, traffic, regulatory, or organizational changes.
Support the review with workload evidence: measured performance and cost, recovery tests, security risks, and service-level objectives—the reliability targets users depend on. The framework guides those decisions; it does not prove compliance by itself.
Source: Google Cloud Well-Architected Framework(opens in a new tab)