Explore mature microservices architecture and operational best practices in this conference talk from YOW! 2019. Learn how the Financial Times built and operates microservices-based systems to deliver value quickly and run numerous experiments annually. Discover strategies for building stable, resilient systems and addressing challenges that arise as microservices mature. Gain insights on implementing essential operational capabilities, including monitoring, observability tools, log aggregation, tracing, and metrics. Understand how to mitigate risks when teams transition and services become less familiar. Prepare for the future of legacy systems built on microservices and learn proactive measures to prevent potential issues.