Microsoft Learn Credentials
Microsoft
Microsoft's certification hub links every Azure exam to a free study guide, free Microsoft Learn training paths, and a free official practice assessment written by the same team that authors the exams and revised as objectives change. Azure's certification track is unusual in giving away the whole prep stack: role-based learning paths, per-exam study guides listing exactly what changed and when, and unlimited free practice assessments for AZ-900, AZ-104, AZ-305, AZ-500 and dozens more.
More resources on Cloud Certifications (AWS, Azure, GCP)
Jayendra's Cloud Certification Blog
Long-running blog of condensed cloud certification notes, exam learning paths, service cheat sheets and sample questions, mainly for AWS Solutions Architect, Developer and DevOps exams, with some Google Cloud and Kubernetes coverage. Candidates use it to review exam-relevant service details before sitting a certification.
Digital Cloud Training
Neal Davis's AWS training site, built around certification prep: paid video courses and practice exams alongside free cheat sheets, service comparisons, and beginner guides. Most useful for drilling exam-relevant service details after you have covered the fundamentals.
AWS Certified DevOps Engineer – Professional
AWS's own exam-preparation material for the Certified DevOps Engineer Professional credential, covering CI/CD pipelines, infrastructure as code, monitoring and logging, incident response, and security and compliance controls on AWS. Assumes prior hands-on experience administering AWS environments.
AWS Certified Solutions Architect Study Guide with 900 Practice Test Questions: Associate (SAA-C03) Exam, 4th Edition
Sybex's exam-aligned textbook for the SAA-C03 blueprint, chapter by chapter, with review questions, hands-on exercises, and an online test bank of practice exams and flashcards. Covers compute, storage, networking, databases, security, and resilience.
Tutorials Dojo AWS Cheat Sheets
Free bullet-point reference notes on roughly two hundred AWS services, pitched at the level of detail the certification exams test. Useful for final review of service limits, pricing models, and the comparisons exams like to ask about.
AWS Solutions Architect Associate Certification (SAA-C03) - Full Course
Fifty-hour video course walking the whole SAA-C03 blueprint: EC2, VPC, S3, IAM, RDS, serverless, and the Well-Architected Framework, with follow-along labs. Structured against the current AWS exam guide rather than a generic AWS overview. The strongest free alternative to the paid Udemy/Cantrill courses everyone else recommends, and long enough to actually teach the services rather than drill answers.