If you want the process of getting ISO certified to proceed smoothly for you then you would really need to work with a reputed company that specializes in it. There are many companies that can assist you with ISO 27001 Training but you should look for and work with those ISO consultants who have a good deal of experience working with businesses in the same niche as yours.
This is because they would understand your challenges and be able to address your concerns better. ISO certification is not mandatory but when you want to gain an upper hand in the competitive marketplace where most companies know exactly what goes into winning client trust, you would want to do something similar to help you stay competitive.
ISO certification is one such factor that can help you realize your growth needs as clients tend to trust the certification. You just have to ensure you work with the right organizations that are better placed in assisting you understand what the requirements are and how to proceed towards gaining recognition. Some business types find ISO certification to be more important than others and hence you should proceed accordingly after discussing with appropriate ISO consultants.