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SAP security · Cybersecurity · AI

Security training,
written by experts.

Plain-language PDF books on SAP security, cybersecurity, AI and certification exams. Buy once, download instantly, read on any device.

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The oJAYo library · 188 titles

Save with a bundle.

Hand-picked packs of books on one theme, for less than buying them one by one.

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SAP security.

Roles, GRC, Fiori, BTP and audit, for the people who secure SAP.

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Built for the people who keep systems secure.

SAP security consultants

Design roles, fix access issues and get through security reviews.

GRC and compliance analysts

Run risk analysis, mitigation and access reviews with confidence.

Internal and external auditors

Know what to test, what evidence to ask for and why it matters.

Certification candidates

Study for CISSP, Security+, CISM and AI exams in plain language.

Cybersecurity.

Zero trust, identity, cloud, the SOC and compliance, explained without the jargon.

See all 64 ›

AI, made practical.

Get real work done with today’s assistants, agents and coding tools.

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Certification guides.

Plain-language study guides for CISSP, Security+, CISM, AWS and more.

See all 28 ›

Why readers choose oJAYo.

Expert-written and reviewed

Every book is written by practitioners, then technically reviewed and edited by the oJAYo team before it reaches you.

Instant access

Your download link arrives by email the moment checkout completes, and stays in your account.

Your personal copy

Each PDF is stamped with your name and email, and you can read it on any laptop, tablet or phone.

Questions, answered.

What format are the books?

Every book is a PDF you can read on a laptop, tablet or phone, and print for your own use.

How do I get my book?

As soon as payment goes through, you get a download link by email, and if you create an account, your books stay in it so you can download them again.

Can I get a refund?

Because downloads can’t be returned, refunds cover duplicate purchases, files that won’t download or open, and wrong titles you haven’t downloaded yet (within 14 days). Read the refund policy ›

Are the certification guides official exam material?

No. They are independent study guides written to help you understand the topics, so always check the exam body’s current objectives too.

Can I share a book with my team?

Each purchase is a personal licence for one reader, so for a team, email jay@ojayo.com for a team licence and one invoice.

Meet the team

Made by the oJAYo team of experts.

Our writers, technical reviewers and editors work across SAP security, GRC, cybersecurity and AI. Each book starts from hands-on experience and is reviewed and edited before it’s published, so you get clear, practical guidance you can use the same day.

For teams

Training your security or audit team?

Team licences, one invoice and a copy for everyone on the team.

Ask about team pricing