This document summarizes digital transformation with Microsoft Azure, including cloud computing, big data, and data lakes. It discusses data lake characteristics such as structured, semi-structured, and unstructured data. Data lakes are used for reporting, visualization, analytics, and machine learning. They provide a single store for raw and processed data ranging from raw copies of source systems to structured data for analytics. The document also briefly mentions Azure Data Lake Analytics, DataBricks, and concludes by thanking the reader.