Azure Data Lake is a scalable data storage and analytics service provided by Microsoft Azure. It allows organizations to store vast amounts of structured and unstructured data in a single repository. This makes it easier to manage and analyze data from various sources, enabling businesses to gain insights and make data-driven decisions. The service supports big data analytics and integrates seamlessly with other Azure services, such as Azure Databricks and Azure Synapse Analytics. With its pay-as-you-go pricing model, users can efficiently store and process data without the need for extensive infrastructure investments.