Christopher Thomas is the director of Government Marketing at Esri. He is a subject matter expert in government, technology, geographic information systems, marketing, and global business development. His books include GIS for Decision Support and Public Policy Making, Standards for Success: GIS for Federal Progress and Accountability, and Building a Smarter Community: GIS for State and Local Government.

Keith Mann is a principal content strategist for Esri Press. He is a writer, developmental editor, and contributor to books, such as the GIS for Science series and the Applying GIS series of books, including Delivering Water and Power: GIS for Utilities, Building a Smarter Community: GIS for State and Local Government, Moving Forward: GIS for Transportation, Valuing Place and Purpose: GIS for Land Administration, Designing Our Future: GIS for Architecture, Engineering, and Construction, and GIS for Science: Volumes 1, 2, and 3.