Discover how Yelp optimizes its Mesos and Marathon infrastructure on AWS Spot Fleet in this 41-minute conference talk. Learn about PaaSTA, Yelp's Platform-as-a-Service, and explore strategies for maximizing cluster utilization while minimizing costs. Gain insights into autoscaling services and servers, improving resilience against AWS instance terminations, and gracefully migrating active traffic. Delve into decision-making processes for cluster capacity management, and understand the challenges and benefits of running on volatile infrastructure. Explore future plans for predictive scaling, parallel scaling, and expanded service deployment. Perfect for those interested in large-scale infrastructure management, cost optimization, and resilient system design in cloud environments.