Problem Control. Problem control activities include problem analysis and documenting workarounds and known errors.

Just like incidents, problems will be prioritized based on the risk they pose in terms of probability and impact to services. Focus should be given to problems that have highest risk to services and service management.

https://www.bmc.com/blogs/itil-problem-management/#:~:text=2.,probability%20and%20impact%20to%20services .

A service request is defined as a request from a user or a user’s authorized representative that initiates a service action which has been agreed as a normal part of service delivery.

The purpose of the service request management practice is to support the agreed quality of a service by handling all pre-defined, user-initiated service requests in an effective and user-friendly manner. Service request management is dependent upon well-designed processes and procedures, which are operationalized through tracking and automation tools to maximize the efficiency of the practice. To be handled optimally, service request management should follow these guidelines:

• Service requests and their fulfilment should be standardized and automated to the greatest degree possible.
• Policies should define which service requests will be fulfilled with limited or even no additional approvals so that fulfilment can be streamlined.
• The expectations of users regarding fulfilment times and costs should be clearly set, based on what the organization can realistically deliver.
• Opportunities for improvement should be identified and implemented to produce faster fulfilment times and take advantage of automation.

https://www.bmc.com/blogs/itil-service-request-management/

The first important step is identifying and managing all the stakeholder groups that an organization deals with. The first and most obvious stakeholder group is the customers, as in service management the organization’s main goal is to facilitate customer outcomes. Other examples of stakeholder collaboration include:

• Developers working with other internal teams
• Suppliers collaborating with the organization
• Relationship managers collaborating with service consumers
• Customers collaborating with each other
• Internal and external suppliers collaborating with each other

The contribution to improvement of each stakeholder group at each level should be understood, as should the most effective methods to engage with them. Depending on the service and the relationship between the service provider and the service consumer, the expectations about the level and type of collaboration can vary significantly. It is important to involve stakeholders, and address their needs at all levels. Determining the type, method, and frequency of such messaging is one of the central activities related to communication.

https://www.bmc.com/blogs/itil-guiding-principles/

• A change that must be implemented as soon as possible without strictly following the standard process e.g. to resolve an incident or implement a security patch.
• The process for assessment and authorization is expedited to ensure quick implementation, so scheduling and documentation is not a priority.
• The change authority may be separate from what is standard or normal practice, typically smaller in number but with greater capacity to expedite approval.

https://www.bmc.com/blogs/itil-change-enablement/

https://www.bmc.com/blogs/itil-service-level-management/

Continual improvement encompasses all elements of the ITIL SVS. It involves aligning an organization’s practices and services with changing business needs, through the ongoing assessment and improvement of each element involved in the management of products and services. Continual improvement applies to the SVS in its entirety, as well as to all of the organization’s products, services, service components, and relationships, and is the responsibility of every individual involved in service management.

https://www.bmc.com/blogs/itil-continual-improvement/

The purpose of the change enablement practice is to maximize the number of successful IT changes by ensuring that risks have been properly assessed, authorizing changes to proceed, and managing the change schedule.