SOLIDWORKS 2023 introduces powerful assembly enhancements for improved efficiency and performance. Key updates include configurable skipped instances in patterns, advanced replace component options with visual previews, and an auto-repair feature for mates to reduce rebuild errors. BOM management is streamlined with configuration-based part numbers, while assembly cuts now support end conditions and exclude toolbox components automatically. Magnetic mates gain suppression control and visibility respect for easier placement. Additional improvements include lightweight mode support in Assembly Visualization, automatic performance optimization for large assemblies, and multi-STEP file export for better collaboration. These features simplify workflows and accelerate complex assembly design.