The purpose of strategic information (SI) is to increase the availability and accessibility of high quality essential data to guide program planning and investment for an effective HIV/AIDS response. The plan measures progress towards achieving national goals and objectives - including Thailand’s commitment to reaching “the three zeros’ of zero new infections, zero AIDS deaths, and zero discrimination - in an effective, efficient and timely manner. The use of empirically based data to guide national and sub national investment into effective responses to the HIV epidemic represents a major step for Thailand. The National Strategic Information and M&E Plan consists of three major components: 1. A set of M&E core indicators that are designed to measure the progress of the National AIDS Strategy (NAS); 2. A work plan for strategic information, monitoring and evaluation; 3. Resource estimation and costing that prioritizes strategic information and M&E activities based on the estimated resources available for the time period.