This document summarizes a webinar about choosing a cloud-based data warehouse. It discusses evaluating different data warehouse technologies like MPP vs SMP and columnar vs row-oriented storage. It also introduces Matillion, a company that provides ETL tools for loading and transforming data in Amazon Redshift, Snowflake and Google BigQuery data warehouses. The webinar agenda includes discussing when a data warehouse is needed, criteria for evaluating options, different technologies, and a demonstration of Matillion's software.