What does the term 'tag' represent in the context of container terminology?

In the context of container terminology, a 'tag' refers to metadata associated with images. Specifically, tags are used to uniquely identify different versions of a container image. This metadata helps in managing and organizing images, allowing users to specify which version of an image to use when deploying or running containers.

For example, an image of a web application might have different tags for various versions (such as "1.0", "1.1", or "latest") to indicate the changes and updates made over time. This tagging system provides clarity and ease of use, facilitating deployment processes and ensuring that the correct image version is utilized in production environments.

Understanding this concept is essential for anyone working with container technologies, as it plays a crucial role in version control and image management within container orchestration platforms.