Will D. Wang · Technical learning
Learn to build and operate reliable systems.
Practical paths, hands-on labs, and field notes across SRE, infrastructure, DevOps, platform engineering, and AI. Start with a service, then follow it from development to production operations.
Choose a focus
Five connected disciplines
Follow a topic from first principles to staff and principal-level decisions.
Site Reliability Engineering
Design SLOs, resilience, incident systems, and reliability governance across teams.
Explore topic 02 / 05Infrastructure
Architect cloud foundations, failure boundaries, IaC, security, recovery, and cost controls.
Explore topic 03 / 05DevOps
Improve delivery flow, progressive release, supply-chain trust, and recovery at scale.
Explore topic 04 / 05Platform Engineering
Build internal products with stable contracts, paved roads, SLOs, and measurable adoption.
Explore topic 05 / 05AI for Engineering
Use AI in engineering workflows, with evaluation and human review built in.
Explore topicStart here
Build and operate a service
One practical thread through delivery, infrastructure, and reliability.
Selected reading
Put the ideas to work
Build and operate a service
Run a small HTTP service locally, package it, deploy it to Kubernetes, and verify its health.
Read more Field noteShorten the CI feedback loop
A practical way to reason about build duration, failure signals, and recovery time.
Read more Reference notesKubernetes concepts
A map of the control plane, workloads, and objects to revisit while working through the lab.
Read moreThe person behind the notes
Hi, I’m Will D.
I work across DevOps and platform engineering. This site is where I turn what I study and build into practical notes for other engineers.