Are you planning to buy an ITIL Study Guide? If you have not factored the cost of an ITIL course, you may want to do self-study using a study guide. For ITIL 4 Foundation, attending ITIL training is not mandatory. Hence, add the cost related to self-study to the ITIL certification cost. A popular paperback edition may cost you over $30 while again a soft copy may bring down your ITIL Certification Cost.
Service Operation (SO) aims to provide best practice for achieving the delivery of agreed levels of services both to end-users and the customers (where "customers" refer to those individuals who pay for the service and negotiate the SLAs). Service operation, as described in the ITIL Service Operation volume, is the part of the lifecycle where the services and value is actually directly delivered. Also the monitoring of problems and balance between service reliability and cost etc. are considered. The functions include technical management, application management, operations management and service desk as well as, responsibilities for staff engaging in Service Operation.
However, ITIL certification is different. Having an ITIL certification doesn’t make us an ‘expert’ for any specific skill set. As you might already be aware, ITIL is a set of best practices and is descriptive in nature. Hence an ITIL certification isn’t about doing your job, but merely about knowing the ITIL principles. In fact, that’s precisely the reason why AXELOS have now added the ITIL Practitioner level which makes it mandatory for IT folks to apply their theoretical knowledge in practice.