This document discusses social and behavior change communication (SBCC) in the context of the Integrated Child Development Services (ICDS) program in India. It outlines different types of communication, including internal communication, external relations, advocacy communication, and SBCC. SBCC aims to engage people and develop strategies leading to sustainable social and behavior change. The document emphasizes the importance of understanding stakeholder perceptions and the reasons behind issues. It presents an ecological model showing the different levels of influence on behavior change, from individual to policy levels. It also discusses how to design effective SBCC programs, including setting SMART objectives and understanding target audiences, as well as how to design effective messages to fill the knowledge gap of audiences.