ISO 27001 is a standard
that outlines the requirements for an information security management system (ISMS). It is a framework that helps organizations to protect their sensitive data and information from threats such as unauthorized access, use, disclosure, disruption, modification, or destruction.
A consultancy is a company or individual that provides expert advice, guidance, or assistance to businesses or organizations in a particular field or area of expertise. In the case of ISO 27001, a consultancy could provide support to an organization in the process of implementing and maintaining an ISMS that meets the requirements of the standard. This could include helping the organization to understand the requirements of the standard, providing guidance on how to effectively implement and document the system, and assisting with the process of obtaining certification to the standard.