Target CLI is a tool designed to simplify the process of managing multiple clusters and environments for HashiCorp tools such as Vault, Nomad, Consul, Boundary, and Terraform by using context profiles to easily switch between different clusters and configurations. It eliminates the need for setting and remembering multiple environment variables for each cluster, saving time and reducing errors. The tool supports managing Terraform configurations, allowing the same code to be used across multiple environments. Target CLI can be installed on Mac and Linux platforms, with plans to add Windows support in the near future.