The Census Bureau is modernizing the collection of data in geographic partnership programs with the latest version of the Geographic Update Partnership Software (GUPS) Web, which continues to utilize a flexible and cost-effective open source architecture but now takes full advantage of the scalability, flexibility, and security of a containerized cloud solution. GUPS Web evolves earlier versions of GUPS into a web application that will further streamline data collection for geographic partnership programs and enable new functionality not possible in a standalone application such as real time sharing of data with partners. This session will discuss how GUPS Web uses open source architecture in the first cloud native web application developed and deployed by the Census Bureau to provide license-free GIS tools that incorporate quality checks, business rules, and custom topology, which standardizes the data update process for 40,000 tribal, state, and local governments across the nation.