AzureSQL PaaS DB and ColumnsStore Index

@grajee Welcome to Microsoft Q&A Forums and thank you for your interest in Azure SQL Database.
A feature comparison between various SQL server versions is here

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Were you looking for below guide which is specific to Azure SQL DB

https://video2.skills-academy.com/en-us/azure/azure-sql/in-memory-oltp-overview

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Please don't forget to Accept Answer and Up-vote if the response helped -- Vaibhav