Census is a new way to use Apache Iceberg, an open-source table format for big data stored in cloud or distributed storage. Iceberg allows efficient management of huge datasets while keeping track of changes. It consists of object storage, REST catalog, and query engine components. The main benefits of using Iceberg include fast and efficient data querying, time travel and version control, schema evolution, cost-effectiveness, and compatibility with various systems. By launching Census Store, the company aims to democratize access to best-in-class data management strategies while freeing up resources for more complex compute tasks.