– WHO articles, recommendations and consultations related to complementary feeding. – During the 2nd ILSI SEA Region Expert Consultation and Planning Meeting in 2011, the following information gaps were identified: (i) Some Southeast Asian countries did not have data on infant and young child feeding (IYCF) indicators; (ii) There is a need to know the reasons for the disparities in duration of breastfeeding, age of giving complementary foods, and other breastfeeding and complementary feeding practices in Southeast Asian populations; (iii) Optimal complementary feeding practices that are most suitable in the context of Southeast Asia need to be identified. This report presents highlights from a literature review regarding the above topics. Findings from nationwide surveys and small scale studies were compiled to provide a snapshot of the state of infant and young child feeding practices in the region. Results for Cambodia, Indonesia, Philippines, and Vietnam are presented in this document.