Explore event sourcing in depth through this 54-minute conference talk by Greg Young, who coined the term CQRS (Command Query Responsibility Segregation). Delve into the concept of event sourcing, its potential value, and how it can transform problem-solving approaches. Examine trade-offs, misconceptions, and concerns associated with event sourcing while gaining insights from Young's extensive experience in the field since 2006. Learn about querying events, read models, object databases, accidental complexity, service buses, and the relationship between event sourcing and domain-driven design. Understand when to apply event sourcing and when it may not be suitable, and discover how major companies utilize this approach. Address common questions and concerns about implementing event sourcing in various scenarios.