ISO 27001:2013 is a management standard, is not a security standard. It provides a framework for the management of security within an organization, but it does not provide a 'Gold Standard' for security, which, if implemented, will ensure the security of an organization.
All company that has sensitive information can find ISO 27001 useful. To see some list of potential benefits, and to learn how to present them, read this article.
ISO 27001 Benefits:
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