Solutions architecting method (SAM) is defined as a methodical approach to dealing with the architecture complexity of enterprise information systems in IT solution designs. This comprehensive method consists of eight interconnected modules: framework for e-business architecture and technology, prescriptive artineering procedure, technology architecture planning, architecture stack and perspectives, rapid architecting process, architecture readiness maturity, generic application platform, and Tao of IT development & engineering. Collectively, these modules form a holistic discipline guiding the process of developing architected solutions in an enterprise computing environment. Several unconventional concepts and thinking styles are introduced in this overarching structure. This systematic method has been customized and adapted to be extensively applied in one form or another to develop various IT solutions across a broad range of industrial sectors. Reference solutions are presented and articulated to illustrate the exemplary implementations of some key elements in SAM. Best practice and lessons learned as well as future trends are discussed in the context.