The objective of this chapter is to present a systematic approach for designing schematic architecture. It emphasizes the identification, evaluation, integration, and refinement of suitable architecture styles to construct a cohesive architectural design for the target system. Key steps in schematic architecture design include evaluating candidate architecture styles, selecting appropriate styles for the target system, and integrating them into a unified schematic architecture. Through guided refinement, this chapter aims to support architects in developing a final schematic architecture that is comprehensive, adaptable, and aligned with the specific requirements of the target system.