Learn about Apache Pulsar's evolution at Yahoo through this conference talk from Pulsar Summit SF 2022 that explores the transition from on-premise to hybrid cloud infrastructure. Discover how Yahoo successfully manages over 1 million topics in a single cluster while examining critical considerations for large-scale enterprises adopting cloud-based messaging systems. Explore key aspects of cloud migration including security measures, cost optimization, architectural cloud-friendliness, capacity planning, tenant isolation, deployment robustness, availability, and monitoring solutions. Gain insights into Pulsar's cloud-native architecture and features that make it an ideal choice for enterprise messaging systems, drawing from Yahoo's 8 years of experience running large-scale Pulsar deployments across various platforms and hardware configurations.