The phrase "multiple domains" refers to having several different areas or fields of expertise, interests, or responsibilities. It means being knowledgeable or involved in various subjects or industries. Full definition
This study examined the differential developmental significance of multiple domains of peer reputation in childhood for current and future competence and symptoms. (link.springer.com)
Benefits for the child appear across multiple domains in early childhood development, including literacy and language, social and emotional development, and cognition. (ceelo.org)
We have hired writers having diversified experience in multiple domains. (essayssos.com)