Henning Schwentner

Legacy systems slow down innovation, increase maintenance costs, and create misalignment between business goals and technical delivery. Domain-Driven Transformation offers a clear, risk-aware path to modernizing complex applications using principles from domain-driven design (DDD) and modular architecture. Authors Henning Schwentner and Carola Lilienthal guide software architects, technical leads, and senior engineers through practical, incremental strategies to evolve legacy systems without the disruption of a full rewrite. With a focus on collaboration, modularity, and strategic refactoring, this book helps you assess architectural maturity using the modularity maturity index (MMI) and identify transformation opportunities through modeling techniques like event storming and domain storytelling. Packed with real-world examples and case-driven insights, you'll uncover the tools needed to build systems that scale, support business agility, and remain resilient over time. Assess your system's modularity and architectural health with the MMI Apply strategic and tactical DDD to manage complexity Break apart monolithic systems into domain-aligned components Use collaborative modeling techniques to align teams and clarify design Refactor incrementally with patterns that reduce risk while delivering value

Build Better Business Software by Telling and Visualizing Stories "From a story to working software--this book helps you to get to the essence of what to build. Highly recommended!" --Oliver Drotbohm Storytelling is at the heart of human communication--why not use it to overcome costly misunderstandings when designing software? By telling and visualizing stories, domain experts and team members make business processes and domain knowledge tangible. Domain Storytelling enables everyone to understand the relevant people, activities, and work items. With this guide, the method's inventors explain how domain experts and teams can work together to capture insights with simple pictographs, show their work, solicit feedback, and get everyone on the same page. Stefan Hofer and Henning Schwentner introduce the method's easy pictographic language, scenario-based modeling techniques, workshop format, and relationship to other modeling methods. Using step-by-step case studies, they guide you through solving many common problems: Fully align all project participants and stakeholders, both technical and business-focusedMaster a simple set of symbols and rules for modeling any process or workflowUse workshop-based collaborative modeling to find better solutions fasterDraw clear boundaries to organize your domain, software, and teamsTransform domain knowledge into requirements, embedded naturally into an agile processMove your models from diagrams and sticky notes to codeGain better visibility into your IT landscape so you can consolidate or optimize itThis guide is for everyone who wants more effective software--from developers, architects, and team leads to the domain experts, product owners, and executives who rely on it every day. Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details.