Learn to read, cut and own your cloud bill.
Free courses on cloud cost for engineers, developers, students, FinOps teams and the people who own the cloud budget. Browse every course without an account; sign in when you start reading. 290 lessons, plus an optional 24-lesson beginner course.
Free. No paywall. Sign in to read lessons, track progress and earn certificates. The beginner course is open to everyone.
Written by the team behind ZopNight. Alumni of
Who it's for.
Platform, SRE and infra engineers
You run the infrastructure behind the bill. Learn where the money goes and how to cut it without breaking production.
Software developers
See what your code costs to run, and catch cost in the pull request before it ships.
Students
Never used the cloud? Start from zero: what you rent, how it is priced, and how to read a real bill.
FinOps practitioners
The FinOps Foundation framework, applied: showback, unit economics, forecasting and commitments.
CIOs and infra heads
Run cloud cost as a practice, not a project: maturity stages, budgets people act on, and what to ask your teams.
Seven courses,
plus an optional beginner course.
Each course maps to a job-to-be-done. Not a vendor feature list. Skim the Operator course in an afternoon; the Architect course rewards weeks of study.
Intro: Cloud, from zero
What the cloud is, what you rent, how it is priced and how to read your first invoice. For people who are new to the cloud.
Cloud Cost Foundations. The vocabulary every course builds on.
Rack rate vs billing, the two-source cost model, multi-cloud taxonomy, the FinOps lifecycle, CDCR.
Operator
Daily product walkthrough. Resources, schedules, overrides, recommendations, audit log. The complete operator surface, ready Monday morning.
Engineer. How the product actually works.
Cluster discovery, recommendation pipeline, auto-remediation rules, override semantics, dependency-aware scheduling, anomaly detection. The biggest course. The one engineers come back to.
DevOps Cost Discipline
Tagging hygiene, schedule patterns, Kubernetes cost, IaC cost gates, cost incident response.
Architect. Design decisions that survive scale.
RBAC topology, multi-account credential strategy, showback dimensions, budget pyramids, dashboard governance, cost-flow Sankey. The choices a year-1 customer will still respect at year five.
FinOps Mastery. The full Foundation framework, applied.
Crawl, Walk, Run. Showback vs chargeback. Unit economics. Budget governance. Anomaly response. Forecasting. Commitments. Sustainability.
AI-Powered Cloud Ops
Connect Claude, Cursor or Codex to your cloud estate, and control exactly what an assistant may change.
One foundation,
three levels,
seven courses.
A new engineer reads T0 and T1 and earns the ZopDev Certified Associate certificate. ZopDev Certified Professional covers T2 and T3. ZopDev Certified Expert covers T4, T5 and T6.
Read a lesson
from the Foundations track.
Every lesson follows the same five-part structure. Outcome, concept, demo, hands-on, knowledge check. Below is the opening of one.
Concept. One piece of arithmetic sits underneath this entire course. It takes ten seconds and it decides where most of the money is.
HOURS IN A WEEK 168
TYPICAL WORKWEEK USEFUL HOURS 60 (Mon-Fri, 12 hrs each, generous)
RATIO 60 / 168 = 35.7%
NON-WORKWEEK HOURS (idle in non-prod) 108 / 168 = 64.3%If something is only useful during working hours, it sits idle for 64 percent of the week. Stop it during those hours and you stop paying for them.
Most non-production systems fit this shape exactly. Development environments. Staging clusters. Test infrastructure. Reporting databases that only serve office hours.
That 64 percent is the ceiling, not the outcome. Three things pull it down in practice: some of it genuinely runs overnight, starting up takes time, and teams are spread across time zones...
Three levels,
earned not awarded.
Pass the exams, earn the badge. Each exam checks that you can do the work, not just recall it.
ZopDev Certified Associate
Multiple-choice exam across T0 Cloud Cost Foundations and T1 Operator. The cloud-cost vocabulary and the daily product surface.
ZopDev Certified Professional
Multiple-choice exam across T2 Engineer and T3 DevOps Cost Discipline. Shows you can run recommendations, auto-remediation, autoscaling and cost controls in ZopNight.
ZopDev Certified Expert
Multiple-choice exam across T4 Architect, T5 FinOps Mastery and T6 AI-Powered Cloud Ops. Design decisions, multi-account topology, RBAC, ROI defense, the senior credential.