The document discusses the evolution of a distributed middleware platform called Metro used by Telenor Fixed Line Services over the past 20 years. It describes the platform's goals of standardizing integration between systems and describes how it has grown from a small initial platform to one handling large volumes of traffic through the use of tools like Maven, Confluence, and Jira. It also discusses how the platform team standardized processes, documented guidelines, provided certification courses, and enforced code quality to improve efficiency and scale the platform to support many projects.