According to the PMI Professional in Business Analysis objectives and content, a subject matter expert (SME) is a person who has specialized knowledge or skills in a particular domain or area. A SME can provide valuable insights, information, and guidance to the project team, especially when the project involves a new or unfamiliar market. By hiring external SMEs for the core project team, the business analyst can help to ensure that the project has the necessary expertise and resources to perform the business analysis activities effectively and efficiently. External SMEs can also help to identify and validate the business needs, requirements, and solutions for the new market, and to reduce the risks and uncertainties associated with the project. References:

PMI Professional in Business Analysis objectives and content: PMI-PBA Certification

PMI Professional in Business Analysis reference list: PBA Reference List

PMI Professional in Business Analysis study guide: Study.com