Description: A metadata block in Terraform is a section within a configuration file that provides additional information about the resources being defined. This block allows users to include details such as descriptions, tags, and other attributes that are not strictly necessary for resource creation but can be useful for managing and organizing infrastructure. Metadata helps teams better understand the purpose and function of each resource, facilitating collaboration and long-term maintenance. Additionally, metadata blocks can be used to integrate management and monitoring tools, allowing for better visibility and control over deployed resources. In summary, the metadata block is an essential tool in infrastructure as code management that enhances clarity and organization.