Lightstep delivers unified observability with visibility across multi-layered architecture. Internet services are in the midst of a sea change: monolithic applications have been split into lean and modular microservices. With this evolution, teams move faster and applications scale more easily. But visibility into the production stack has suffered. Teams need to reconsider how they do everything from latency monitoring, alerting, and distributed debugging to resource accounting, security audits, and policy enforcement. LightStep is rethinking observability in the emerging world of microservices and high concurrency. Our first product enables developers and devops to trace individual requests through complex systems with incredibly high fidelity.