An organization must adhere to the international standard ISO 20000-1 in order to create, implement, maintain, and continuously enhance an IT Service Management System (ITSM). Consulting for ISO 20000-1 entails assisting companies in bringing their IT service management procedures into compliance with the standard’s specifications. The steps involved in providing ISO 20000-1 consulting are summarized as follows: 

1. First Evaluation and Analysis of Gaps: The first step for consultants is to evaluate the organization’s present IT service management procedures and practices in comparison to ISO 20000-1. This evaluation aids in locating weaknesses and areas in need of development.
2. Define the Scope: Describe the services, procedures, and organizational units that will be included in the ISO 20000-1 compliance when defining the scope of the ITSM system implementation.
3. Documentation and Policy Development: Help create and record ITSM processes, procedures, and policies that are in line with ISO 20000-1 specifications. This entails drafting policies for change management, incident management, service management, etc.
4. Assistance with the creation and documentation of the service catalog, which lists all of the IT services that the company provides along with service levels, service descriptions, and service level agreements (SLAs).
5. Support for Implementation: Assist the organization in putting the ITSM procedures and practices outlined in the scope into action while making sure they are properly integrated into the running IT operations.
6. Training and Awareness: Hold training sessions for IT employees and other pertinent staff members to make sure they comprehend the fundamentals of ISO 20000-1 and their responsibilities in putting into practice and upholding ITSM procedures that adhere to the standard.
7. Performance Metrics and Measurement: To gauge the efficiency and performance of ITSM procedures, define metrics and key performance indicators (KPIs). This aids in tracking and assessing the accomplishment of service management goals.
8. Internal Audits: Evaluate the ITSM system’s compliance with ISO 20000-1 requirements by conducting internal audits. Point out any inconsistencies and potential improvement areas.
9. Management Review: Help set up meetings for the management review to assess the ITSM system’s performance, consider audit results, and make required adjustments.
10. Assistance with Certification Audits: Offer assistance to a certification body during the official ISO 20000-1 certification audit. Consultants can help with questions and make sure that ISO 20000-1 requirements are followed.
11. Maintenance Support: Provide continuing assistance to ensure that the ITSM system is maintained and improved over time. This entails doing follow-up audits, periodic reviews, and help with any corrective actions that come out of the certification audit.

Understanding ISO 20000-1 requirements, having experience with IT service management, and being able to customize solutions to fit the unique requirements of various organizations are all necessary for ISO 20000-1 consulting. When it comes to helping companies set up efficient IT service management systems that adhere to international standards, consultants are essential.