Explore the critical role of Service Mesh in cloud native architecture through this 54-minute conference talk from GeeCON 2022. Delve into the philosophical questions surrounding the necessity and capabilities of Service Mesh, examining its potential to simplify application design while acknowledging areas where it may introduce complexity. Discover how Service Mesh facilitates flexible, reliable, and fast communication between service instances, allowing developers to focus on business value while handling complex non-functional tasks such as service discovery, load balancing, encryption, authentication, authorization, and circuit breaker pattern support. Through demonstrations, learn how both modern microservices architectures and legacy monolith applications can benefit from implementing Service Mesh technology.