Hi @sakuraime ,
Thanks for your query.
If the Synapse dedicated pool is created outside of Synapse Workspace [existing DW customers - formerly Azure SQL DW)] then it is - *.database.windows.net
If it’s created from a Synapse Analytics Workspace then it is - .sql.azuresynapse.net
Technically it's just a DNS cname record done for branding purposes: foo.sql.azuresynapse.net points to foo.database.windows.net. There should be no performance difference in actual client-server interaction.
Hope this clarifies.
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