Mainstreaming refers to the process of integrating a particular issue, such as gender equality, environmental sustainability, or disability rights, into all aspects of decision-making and policy development. This approach aims to make the issue a core consideration in all areas of society, rather than treating it as a separate, isolated concern. Mainstreaming typically involves addressing systemic barriers and biases that prevent equal access and opportunities for marginalized groups, and promoting greater awareness and inclusion in all policies and practices. This concept is often used in the fields of education, public health, social welfare, and international development to promote more equitable and inclusive outcomes.