A free-form label used for filtering and automation.
Tags are the most flexible product attribute on Shopify: unstructured strings, no schema, up to 250 per product. That flexibility is also their curse — tags accumulate typos, casing variants and orphans until filters and automated collections quietly stop working. A healthy tag taxonomy separates functional tags (used by automations or collection rules) from descriptive tags (used by humans only), documents the vocabulary somewhere outside Shopify, and runs a periodic cleanup to merge near-duplicates.
