ISSS operates mainly in the U.S., but has custom designed and built over 1,000 systems for clients on all of the continents with the exception of Antarctica.
Most ISSS clients are national, state, provincial and local governments, and utility companies.
Government agencies use spatial IT to more accurately determine property taxes, manage infrastructure and natural resources, dispatch police and fire resources and plan for growth, among many uses. Utilities use spatial IT mainly to track and maintain their physical assets. ISSS is currently designing and building a spatial data warehouse for New York City that provides Internet-enabled access and applications to a wealth of city data. It will be the largest spatial data warehouse ever constructed for a city government. The company is also advising City GIS Development Company and the Shanghai Environmental Information Center on the development of spatial IT systems for the Shanghai Sewer Authority and the Shanghai Environmental Protection Bureau, respectively.