Child welfare is an interdisciplinary academic field and research concept primarily focused on understanding, promoting, and safeguarding the well-being, safety, and optimal development of children, particularly those at risk or experiencing vulnerability. It investigates the complex interplay of individual, family, community, and societal factors impacting child vulnerability and resilience, examining the causes and consequences of child maltreatment and neglect. The field analyzes the effectiveness of social policies, intervention programs, and service delivery systems designed to prevent harm, protect children, and support families, employing diverse methodological approaches from social sciences, law, and public health to inform evidence-based practice, policy development, and advocacy aimed at improving outcomes for children.