The existing Enterprise Architecture Frameworks support the silos created by local government departmental requirements. However, as the concept of collaborative government progresses, this architecture will need to change so that it becomes a platform shared across many different services. For example, various functions of government, such as immigration, social security, and health services, regularly collaborate with one another to provide better service, without having many citizen touch points. This requires corresponding enterprise architecture for each department, referred to as a Collaborative Enterprise Architecture Framework (CEAF). The CEAF will provide advantages in the use of advancements in communication, security, and cloud-computing technology. Nowadays, when technological upheaval is imminent, an EAF must be refined and tuned. A study of the key elements of a CEAF would reduce resource usage based on physical layers of servers and client devices (optimisation of the infrastructures or databases), especially power usage. Similarly, it will propose high-level strategies to attain green ICT. This chapter will explore how CEAF can help incorporate SOA, cloud computing, mobile technology, and enhanced security to facilitate collaboration. This will offer organisations a framework for publishing and subscribing to data, information, knowledge, and intelligence services.