SwiftData + CloudKit Sync (2025): Full Setup Guide for Multi-Device iOS Apps

The podcast provides a comprehensive guide to syncing SwiftData across multiple Apple devices using iCloud and CloudKit. It emphasizes the importance of enabling CloudKit, setting up the correct container ID, and handling common errors like schema mismatches and permission failures. The speaker details how to ensure data persistence across devices, even after app deletion and reinstallation, by leveraging CloudKit's storage capabilities. Best practices include using default values for model attributes, adding background modes for remote notifications, and debugging with console logs and the iCloud dashboard. The podcast further explains the distinction between development and production environments in CloudKit, advising on when to promote schemas to production for App Store review.