The text discusses the importance of application dependency mapping in modern IT management and DevOps. It explains that this process involves identifying, visualizing, and documenting relationships between different components within an IT ecosystem or business process to make it easier to trace issues through a specific business process or workflow. The benefits of application dependency mapping include improved visibility into IT infrastructure, enhanced decision-making processes, efficient resource allocation, enhanced security measures, and reduced downtime. To implement application dependency mapping effectively, organizations should follow best practices such as identifying critical applications and dependencies, conducting real-time monitoring and data accuracy, collaborating and documenting, updating regularly, and performing routine maintenance. By leveraging comprehensive solutions from New Relic, organizations can ensure that the key IT components that power their business remain up and working as efficiently as possible.