About ITIL Certification exam

ITIL stands for Information Technology Infrastructure Library.The Information Technology Infrastructure Library (ITIL) is a said to be a set of concepts and policies for managing and administrating information technology (IT) infrastructure, development and operations.

There are many commercial partners for ITIL certification and there are different levels of levels of certification as well. Certification in particular domain shows the credibility of a professional and hence gives an impression of the infrastructure which is being followed in an organization. As there are many guides available on ITIL certification.

Best Practice and Good Practice

Best practice provides a set of generic guidelines based on the successful experiences of a number of organizations. These guidelines are at a high level and do not answer questions about how they should be applied in specific types of organizations.

Good practice could be either an application of best practice, or it could be an input into best practice.
Good practice as an application of Best Practice

As organization define specific solutions based on best practice, these are passed on as a good practice within organizations of a similar nature. For example, a vendor sells & implements a service Management tool in several organizations.
After each implementation, they learn more about how Best Practice is applied when using this tool. These lessons then become a good practice for implementing that tool.