FitSM  is a standard for lightweight service management. Its process framework is quite similar to that of ISO/IEC 20000 and the Service Support and Service Delivery parts of ITIL Version 2, but adopts Service Portfolio Management from later ITIL versions. FitSM contains several parts, including samples and templates for core ITSM documents, that are published under Creative Common licenses.
Continuous Service Improvement: This phase defines new requirements for the preceding phases of ITIL based on operational feedback and service levels. It helps to ensure that policies and procedures are followed, that service level agreements are met and that operational lessons learned are incorporated into existing and future service refinements.
Earl is also a 30-year veteran of the computer industry, who worked in IT training, marketing, technical evangelism and market analysis in the areas of networking and systems technology and management. Ed and Earl met in the late 1980s when Ed hired Earl as a trainer at an Austin-area networking company that's now part of HP. The two of them have written numerous books together on NetWare, Windows Server and other topics. Earl is also a regular writer for the computer trade press with many e-books, white papers and articles to his credit.
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.