The term "SCA" can refer to different things depending on the context. Here are the different meanings of SCA based on the search results:

• Society for Creative Anachronism: The Society for Creative Anachronism (SCA) is an international living history group with the aim of studying and recreating mainly Medieval European cultures and their histories before the 17th century. It is a non-profit volunteer educational organization that is devoted to the research and re-creation of pre-seventeenth century skills, arts, combat, and culture.

• Software Composition Analysis: Software Composition Analysis (SCA) is an automated process that identifies the open source software in a codebase. This analysis is performed to evaluate security, license compliance, and code quality. SCA tools identify all open source packages in an application and all the known vulnerabilities of those packages. This knowledge can be used to notify developers of the issues in their code to fix them before they are exploited.

• Service Contract Act: The Service Contract Act (SCA) provides covered service workers on federal service contracts the right to receive at least the locally prevailing wage rate and fringe benefits, as determined by the Department of Labor. The SCA applies to every contract entered into by the United States or the District of Columbia, the principal purpose of which is to furnish services in the United States through the use of service employees.

In summary, SCA can refer to the Society for Creative Anachronism, Software Composition Analysis, or the Service Contract Act, depending on the context.