Access Control Lists(ACLs) in azure are an extremely powerful toolset to provision granular levels of access in Azure Data Lake. Role-Based Access Control (RBAC) is best option to setup broader access levels however with ACLs you can reach the lowest possible grains as low as a file inside a blob container. Think of a scenario where you want to add more than 1 user to a folder inside a blob container and each one of them sees only their data - Possible with ACLs Prerequisites Azure Subscription Storage blob with hierarchical namespace enabled Reader Access on the storage object via RBAC How to setup ACLs in Azure Data Lake Like any other offering, Microsoft has a broad spectrum of tools/ways to setup ACLs, ranging from Azure Portal to writing python code . All the steps involved are available in Microsoft documentation, and in a very descriptive manner, therefore needless to rephrase again in this article. Instead, lets walk through some of the challenges one can c...