Books

Ansible is a simple, but powerful, server and configuration management tool. Learn to use Ansible effectively, whether you manage one server—or thousands.

The deepest tutorial and explanation about EventStorming, straight from the inventor.

Master Domain-Driven Design Tactical patterns: Entities, Value Objects, Services, Domain Events, Aggregates, Factories, Repositories and Application Services; with real examples in PHP. Explore the advantages of Hexagonal Architecture and understand Strategic design with Bounded Contexts and their integration through REST and message queues.

Your hard skills landed you the management position, but it’s your soft and management skills that will drive your success. Numerous books cover architecture and processes, "Amazing CTO" stands out as the essential guide for managing effectively, authored by influential CTO Coach Stephan Schmidt.

You don't need a massive budget or a team of consultants to build a security program that actually works. Building an Agile Security Program gives startup founders and CTOs a step-by-step, NIST-aligned playbook with 300+ prioritized tasks, runnable automation code, and the practitioner voice of someone who's done it a hundred times.

This book describes the process of analyzing data. The authors have extensive experience both managing data analysts and conducting their own data analyses, and this book is a distillation of their experience in a format that is applicable to both practitioners and managers in data science. Printed copies are available through Lulu.

Impact mapping helps to create better plans and roadmaps that ensure alignment of business and delivery, and help organisations make an impact with their software.

What if wealth didn’t require self-betrayal? The INFJ Millionaire shows thoughtful, idealistic people how to build real financial freedom through calm strategy, ethical leverage, and systems that protect both their values and their energy.

Transform your cybersecurity from a necessary expense into a powerful engine for business expansion and market differentiation. This guide reveals how fractional executive leadership provides the enterprise-level strategy needed to build customer trust, navigate compliance, and outpace the competition. Stop just protecting your business and start using security to propel it forward.

Open Source documentation of the Certified Agile Leadership training Olaf has designed and iteratively improved over the last five years.

The SaaS Email Marketing Playbook contains everything you need to plan, build, and optimize your email marketing program.

A practical guide for SaaS founders who want their product to sound real, not rehearsed. Learn how to write website copy, positioning statements, and elevator pitches that earn trust and make sense — without sounding like a pitch deck. This book helps you say what you do, who it’s for, and why it matters, in clear, specific language that works.

Understand your audience better and improve your products by engaging long-tail users that seem to follow some unexplainable "lizard" logic. Lizard Optimization helped Narakeet usage grow by 500 times in 12 months. It can help you reduce churn and keep customers engaged for longer, uncover new feature ideas, engage overlooked categories of users, and address larger markets.

When AI rewrites the rules of value, one man discovers the 23 ancient laws of survival that no machine can replace.

Hoe je beter kunt worden in het leren van fouten — het opbouwen van een cultuur waarin geleerd wordt van fouten binnen je team of organisatie.