Certification prep

Practice for your certification.

Full-length, exam-style mock tests plus an adaptive Gap Engine that keeps drilling the domains you keep missing. Buy the book, scan the printed code, and the full online practice bank unlocks free — kept current as the exam changes.

29 exams live now

Amazon Web Services

Microsoft

Google Cloud

Anthropic · Claude

NVIDIA

Kubernetes & Cloud Native (CNCF)

HashiCorp

GitHub

CompTIA

MongoDB

Confluent · Apache Kafka

dbt Labs

CertNexus

FinOps Foundation

ISACA

Buy the book. The practice comes free.

Every exam ships as a Kindle and paperback study guide with full-length mock tests. The printed code inside unlocks the online Gap Engine free — every question, the timed mock, and your readiness score — and it stays unlocked through every attempt.

Unlock with your book code →How it works