For years the Model Based Systems Engineering (MBSE) community has been armed with the Systems Modeling Language (SysML) and a host of vendor provided tools to facilitate require-ments, architecture and design development. Nonetheless, teams repeatedly struggle to apply these tools in practice because they do not have a powerful style to enable teamwork in a model and set of flexible methods to guide work which is consistent with that style. This paper seeks to offer an easy to use process for building a System Architecture Model (SAM), allowing for tai-loring to meet program-specific needs. The paper identifies and encourages the use of a variety of SAM development methods which are focused on the themes of data centricity, consistency, commonality in style, and efficiently creating content that will answer most engineering ques-tions related to architecture. This process is implemented in SysML as a “One Page Process”, and made openly available for download. Furthermore, automated validation via a rules-based engine is leveraged to catch and correct defects nearly as quickly as they are generated as well as scale SAM development across a large diverse team of contributors. By leveraging and tailoring this process to meet program needs, one may improve the quality, development tempo, and rigor of their SAM.