Explore the transition from SQL to Azure Cosmos DB in this comprehensive conference talk. Learn about the various NoSQL database options available under Cosmos DB, including key-value, columnar, document, and graph models. Discover how to adapt your system architecture, data modeling techniques, and domain models to leverage the power of document-based NoSQL databases. Examine the trade-offs involved in moving from SQL to Cosmos DB, including changes in transactional models, querying capabilities, and usage patterns. Gain insights into schemaless data design, distributed transactions, domain events, and document migration strategies. Through practical examples and code demonstrations, understand how to effectively utilize Cosmos DB's features such as the emulator, Data Explorer, and transaction support to build robust, scalable applications.