What is the purpose of the scope of a QMS

Answer:
An organization, a business unit or a hospital, can have several lines of products, can have different markets, can provide different services. Once an organization decides to implement a quality management system (QMS) and certify it, the organization is not obliged to integrate all those services, lines and products under the QMS and subject all activities to certification. For example, a hospital with 10 different services can decide to certify only 2 (Diagnostic Imaging and Gastroenterology). Deciding the scope of the QMS is not a technical decision, it is a management decision.
The certificate describes the scope of the QMS in order to avoid misleading any interested party.

The following material will provide you more information about scope definition:
- ISO 9001 – How to define the scope of the QMS according to ISO 9001:2015 - https://advisera.com/9001academy/knowledgebase/how-to-define-the-scope-of-the-qms-according-to-iso-90012015/
- free online training ISO 9001:2015 Fo undations Course - https://advisera.com/training/iso-9001-foundations-course/
- book - Discover ISO 9001:2015 Through Practical Examples - https://advisera.com/books/discover-iso-9001-2015-through-practical-examples/