Hello @Robertson, James ,
Welcome to the Microsoft Q&A platform.
By using tagging, you can associate keywords with an asset or a column, which in turn makes it easier to discover the asset via searching or browsing. Tagging also helps you more easily understand the context and intent of the asset.
For more details, refer Set up the business glossary for governed tagging.
Note: For updated Data Catalog features, please use the new Azure Purview service, which offers unified data governance for your entire data estate.
Hope this helps. Do let us know if you any further queries.
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