Earlier, applications were mostly monolithic, meaning that several programs were written in the same language and placed in the same web stack. However, it is no longer the case today. Today, every software is comprised of several small application programs coming together each providing a service of its own. These applications are what we call microservices. With the rise of microservices, the need for comprehensive visibility into the flow of requests and responses across multiple services has become increasingly crucial. This is where distributed tracing systems like Jaeger come into play.