Chiplet-Based System Design Methodology is a modular approach to chip design that decomposes monolithic systems into smaller, reusable chiplets connected through standardized interfaces — This methodology represents a paradigm shift in semiconductor architecture, enabling designers to combine different process nodes and functional domains on a single substrate. Key Architectural Advantages include improved yield through smaller die sizes, cost reduction via reusable components, and enhanced flexibility in system composition. Design Methodology Components encompass chiplet partitioning strategies that evaluate trade-offs between integration density and design complexity, interface standardization enabling multi-vendor chiplet ecosystems, and die-to-die communication optimization. Integration Considerations address thermal management across chiplet boundaries, power distribution networking to multiple dies, and clock distribution schemes that maintain timing closure across chiplet domains. Chiplet Selection Criteria evaluate functional boundaries based on design maturity, process technology requirements, and reusability potential across product families. Manufacturing Economics leverage chiplet approaches to reduce respins, enable incremental product improvements, and democratize access to advanced nodes through cost sharing. System-Level Design requires sophisticated simulation frameworks that model chiplet interactions, interconnect latencies, and heterogeneous performance characteristics. Chiplet-Based System Design Methodology fundamentally transforms how engineers approach complex IC architecture through modularization and standardized integration.