Given the fast-changing business environment, large legacy organizations need to embark on a digital transformation journey to stay relevant and flourish. Specifically, they need to work with a business-driven framework that enhances business capabilities with architectural principles in mind so the business can adapt faster. Business architecture is a discipline that can help in this journey by bringing to the business the same rigor and adherence to architectural principles that IT has matured over the past few decades. While all of the architectural principles are critical in such a transformation, two specific ones — modularity and reconfigurability — are needed so the enterprise can adapt and respond quickly to a fast and continuously changing environment.