信息架构是在信息环境中，影响系统组织、导览、及分类标签的组合结构。这是将架构和设计学运用在数字环境中的一门学问。 在国外叫做Information Architecture，它是基于信息架构方法论，并运用计算机技术（Content Management System）管理和组织信息的一个专门学科。从事该行的人员一般叫做信息架构师。----luilui1122

Information architecture (IA) is the structural design of shared information environments; the art and science of organizing and labelling websites, intranets, online communities and software to support usability and findability; and an emerging community of practice focused on bringing principles of design and architecture to the digital landscape. Typically, it involves a model or concept of information that is used and applied to activities which require explicit details of complex information systems. These activities include library systems and database development.