About oJAYo

oJAYo publishes clear, practical books on SAP security, cybersecurity and AI, written by people who do this work every day.

Who we are

oJAYo is a team of 30 practitioners, each with more than two decades of hands-on experience in SAP, cybersecurity and AI. We wrote these books because we kept seeing the same thing: good people struggling with topics that are explained badly, scattered across vendor manuals, forum posts and slide decks.

Every oJAYo book takes one topic and explains it from the beginning, in plain language, with diagrams, examples and checklists you can use at work the same day.

How every book is made

1. Written by a practitioner. Each book starts with an expert who works in that area and knows where people get stuck.
2. Technically reviewed. A second expert checks the facts, the screens and the advice against current releases.
3. Edited for plain language. Our editors cut jargon and make every chapter short enough to read in one sitting.
4. Kept current. Every title is written for 2026 and reflects today’s versions, tools and exams.

What we believe

• Plain language beats jargon. If a concept can be explained simply, we explain it simply.
• Practical beats theory. Each book shows where things live, why they matter and what to do next.
• Honest and independent. We are not affiliated with SAP or any vendor we write about, and our study guides are not official exam material.

Work with us

Training a security, audit or SAP team? We offer team licences with one invoice. Get in touch ›