Tech concepts, made clear
Short, plain-English guides to the ideas behind DevOps, cloud, SRE and AI engineering. Each one has a card you can save and share.
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Model Context Protocol (MCP) in one guide: what it is, why it matters, how it works, tools vs resources vs prompts, local vs remote, security, DevOps uses and building your own server.
Who does what on every task. Responsible, Accountable, Consulted and Informed, explained with a real release example.
The four numbers that show how well a team ships software: deployment frequency, lead time, change failure rate and time to restore.
The Software Development Life Cycle: plan, design, build, test, deploy and maintain, and where DevOps and CI/CD fit in.
Two ways to run a software project, compared side by side: approach, planning, changes, delivery and when to use each.
How a code change goes from a developer's laptop to production automatically: commit, build, test, release, deploy and monitor.
How reliable teams measure, target and promise uptime, plus error budgets, explained with a payments API example.
Twelve rules for building apps that run, scale and deploy cleanly in the cloud, on containers and Kubernetes.
Two ways to ship a new version without taking users down, compared: how they work, rollback, risk, cost and tools.
Containers and virtual machines compared: isolation, size, start-up time, density and when to use each.
The six Kubernetes building blocks you'll use in almost every app: Pod, Deployment, Service, Ingress, ConfigMap and Namespace.
The seven layers of networking, from physical cables to HTTP and DNS, with examples and a memory trick.
The four roles that turn an outage into a calm, fast recovery, plus severity levels and blameless post-mortems.