In order for government organizations to be geared towards digital government they need to have the basic systems in terms of hardware, software, systems and data in order to support integration. Therefore, the exchange of government data is considered to be the major factor in developing digital government. This article aims to design the service-oriented architecture (SOA) for data exchange within the Ministry of Education in Thailand which has a varied internal structure, by using REST as the "Architectural style" and JSON as the standard for exchanging data according to the information standard that is prescribed by the Ministry of Education.