For the last decade, spatial information technique had overcame many difficulties to integrate with world wide web to represent digital spatial information. And now, we are entering the next stage of the development of web-based spatial information application. This study is trying to implement spatial data analysis through world wide web with both vector and raster type data which based on service oriented concept. To achieve the objective above, our study scope focus on the modularization of spatial data analysis and the SOA (service oriented architecture) based on web service. First, an automated land cover change detection model had been developed to provide as a web-based service. In the other hand, a SOA system architecture design will be discussed to complete our implementation.