Tags (often referred to as labels or keywords in different contexts) are metadata identifiers used to categorize, organize, and search for resources. When an administrator creates AppTemplates, particularly when sourcing them from a Helm chart in a Git repository, they can specify keywords in the Chart.yaml file. These keywords function as tags, enabling the templates to be easily organized and discovered through searching. This directly addresses the administrator's need to manage a collection of various templates effectively.

A. Annotations: Annotations are used to attach arbitrary, non-identifying metadata to objects and are not primarily intended for filtering or searching, unlike tags or labels.

B. Comments: Comments are human-readable notes within configuration files or code. They are ignored by the system and cannot be used for organization or searching.

C. Pull Requests: Pull requests are a feature of version control systems (like Git) for code review and merging, and are not a feature for organizing templates within Astra Control.

1. NetApp Astra Control Center Documentation: This documentation confirms that AppTemplates can be sourced from a Git repository using Helm, establishing the relevance of Helm chart features.

Source: NetApp Product Documentation, Astra Control Center 23.10, "Manage AppTemplates with Astra Control Center," section "Add an AppTemplate from a Git repository using Helm."

2. Official Helm Documentation: The Helm documentation explicitly defines the keywords field in Chart.yaml as the mechanism for making charts searchable, which is functionally equivalent to tagging.

Source: Helm Documentation, "The Chart.yaml File," helm.sh/docs/topics/charts/#the-chartyaml-file. The description for the keywords field states: "A list of keywords to search for."

3. Official Kubernetes Documentation: As Astra Control is a Kubernetes-native platform, the distinction between labels (tags) and annotations is critical. Kubernetes documentation clarifies that labels are for organizing and selecting objects, while annotations are not.

Source: Kubernetes Documentation, "Labels and Selectors," kubernetes.io/docs/concepts/overview/working-with-objects/labels/. It states, "Labels can be used to organize and to select subsets of objects." In contrast, the documentation on "Annotations" notes they are for "arbitrary non-identifying metadata."