SwiftUI Performance Reference Comprehensive guide to performance optimization, lazy loading, image handling, and concurrency patterns. Avoid Redundant State Updates Pass Only What Views Need POD Views for Fast Diffing POD (Plain Old Data) views use for fastest diffing — only simple value types, no property wrappers. Advanced : Wrap expensive non-POD views in POD parent views. Task Cancellation Eliminate Unnecessary Dependencies AsyncImage Best Practices SF Symbols ---