摘要:The work considers information and computing technologies supporting regional decisions making and based on geoinformation websystems and mapping web-services. The use of such systems for the information support of regional management is now becoming common. Long-term strategic forecasting and planning of territories development, solution of various institutional and sectoral problems today are often based on the use of integrated information and computing environment, complex information systems of regional management, which are based on geospatial (mapping) data. This paper discusses technologies and webservices used in the creation and implementation of regional geoinformation web-systems. Such systems provide access to huge arrays of geospatial information and services distributed in the Internet, remote data processing with high performance multi-user computers. Problems of choosing basic software such as geoinformation platform, advantages and disadvantages of existing solutions are discussed. The software structure and basic web-GIS components are analyzed. Examples of completed projects are given.