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Best features available on tables you own: Open catalogs like Unity Catalog deliver all advanced table features on tables in your storage, not only on tables a provider stores for you. While almost every platform now supports open formats, what makes a catalog truly open? An open catalog keeps your data in storage you own , gives you the best features there, and supports data portability : the ability to move your tables to another catalog while keeping the data in place . Portability is a core tenet of an open lakehouse, and it’s where most catalogs fall short. 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