The most appropriate approach for the service provider is to use a mix of communication methods and ensure that a feedback mechanism is included that allows anonymity to be retained if desired. This is because the service provider expects resistance to the changes and would like to manage communication in a sensitive way. By using a mix of communication methods, the service provider can reach a wider audience and cater to different preferences and needs of the staff. By ensuring that a feedback mechanism is included, the service provider can collect valuable input from the staff and address any concerns or issues that may arise. By allowing anonymity to be retained if desired, the service provider can encourage honest and candid feedback from the staff and avoid any fear of retaliation or negative consequences. This approach is aligned with the ITIL guiding principles of collaborate and promote visibility, keep it simple and practical, and optimize and automate12. It also follows the ITIL best practices for effective communication, such as communication is a two-way process, timing andfrequency matter, and there is no single method of communication that works for everyone34. References:

The 7 Guiding Principles of ITIL 4 - IFS Blog1

The 7 Guiding Principles of ITIL 4: Practical Advice to Help You Make Decisions2

Using ITIL’s concepts: 5 principles of good communication3

Importance of IT Communications in ITIL Implementation - Invensis Learning4