空间信息基础设施是建立和维护一个共享的地理空间信息框架所需要的宗旨、标准、体系结构、政策和人。体系结构是实施地理空间信息基础设施的逻辑模型。从不同的角度可将体系结构分为操作体系结构、技术体系结构、数据体系结构、系统体系结构和机构体系结构, 空间信息基础设施的目的是建立一个空间信息框架。

National Spatial Information Infrastructure (NSII) includes principle, standards, architecture, policies and people which build and maintain a sharing geospatial information framework. Architecture is a logical model for NSII. From different dimensions we can derive five views from architecture: operational architecture, technical architecture, data architecture, system architecture and institutional architecture. The purpose of the NSII is spatial information framework.