Command Query Responsibility Segregation - pattern that separates read and write operations for data stores. Like having separate express lanes for deposits and withdrawals at a bank.
E-commerce platforms use CQRS to optimize product searches separately from inventory updates for better performance.
CQRS is an application architecture pattern, not a single managed cloud service. It’s typically implemented using a combination of compute (microservices/functions), messaging/streaming, and separate data stores optimized for writes (commands) and reads (queries).