Operational Excellence Pillar

The Operational Excellence pillar focuses on running and monitoring systems to deliver business value and continually improving supporting processes and procedures. It is about how you manage your workloads, respond to events, and learn from experience to drive continuous improvement.

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Design Principles

The Operational Excellence pillar is guided by five design principles:

1. Perform Operations as Code

Define your entire workload — infrastructure, configuration, and operational procedures — as code. This eliminates human error, enables version control, and allows you to trigger operations in response to events automatically.

2. Make Frequent, Small, Reversible Changes

Design workloads to allow components to be updated regularly in small increments. Small changes are easier to understand, test, and roll back if something goes wrong. This reduces the blast radius of any single change.

3. Refine Operations Procedures Frequently

As you evolve your workload, evolve your procedures alongside it. Set regular reviews to identify which procedures are effective and which need updating. Procedures that are never reviewed become stale and unreliable.

4. Anticipate Failure

Perform pre-mortem exercises to identify potential sources of failure so you can remove or mitigate them. Test your failure scenarios and validate your understanding of their impact. This builds resilience before incidents occur.

5. Learn from All Operational Failures

Drive improvement through lessons learned from all operational events and failures. Share what is learned across teams and throughout the organisation. Create a culture where failure is seen as an opportunity to improve.

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Best Practice Areas

The Operational Excellence pillar organises its guidance into four best practice areas:

Organisation

Your teams need a shared understanding of the entire workload, their role in it, and shared business goals. This includes:

• Organisational culture — foster a culture where team members are empowered to take action and are supported when they make decisions
• Governance — establish standards, policies, and processes that guide operational activities
• Team structure — ensure teams have the right skills and resources to own and operate their workloads
• OKRs and KPIs — define measurable goals that align operational activities with business outcomes

Prepare

Effective preparation is essential for operational excellence. Key practices include:

• Design telemetry — instrument your workload to emit the metrics, logs, and traces needed to understand its behaviour
• Design for operations — build workloads that are easy to deploy, update, and operate. Use infrastructure as code and automate build and deployment pipelines
• Mitigate deployment risks — use deployment strategies such as canary releases, blue/green deployments, and feature flags to reduce the risk of changes
• Operational readiness — validate that your workload meets operational standards before going live. Create runbooks and playbooks for common scenarios