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Enterprise information security architecture (EISA) is the practice of applying a
comprehensive and rigorous method for describing a current and/or future structure and
behavior for an organization's security processes, information security systems,
personnel and organizational sub-units, so that they align with the organization's core
goals and strategic direction. Although often associated strictly with information security
technology, it relates more broadly to the security practice of business optimization in that
it addresses business security architecture, performance management and security
process architecture as well.