The diploma thesis reacts on the interest of the Czech foreign ministry IT department to get an overview of ITIL 2 and COBIT 4.1 world-wide acknowledged IS/IT management best practice libraries. Both libraries are put in the framework of IT Governance theory and practice. COBIT is presented as world ITG standard, meaning the alignment of organization's strategic goals and IT goals. It is focused on organizations, where the shift of IT perception towards a strategic partnership with the business is driven by top-down board initiative. On the other hand, the ITIL core texts Service Support and Service Delivery are treated as a standard of IT service management, suitable as a framework to establish processes within the foreign ministry's IT department. Three alternative implementations of the two libraries are shown, in a situation of non-existent process management and information architecture. Moreover, the IT Governance initiative has a bottom-up character. The first variant connects ITIL and COBIT process models to the goals and projects outlaid in the 2008-2010 IT Strategy draft (IT BSC was used in the strategy to set up goals). The COBIT processes are aligned to the IT BSC domains and projects; further on, more detailed ITIL tools are assigned to the COBIT processes using the toolbox [IT GOVERNANCE INSTITUTE; OFFICE OF GOVERNMENT COMMERCE. Aligning COBIT, ITIL and ISO 17799 for Business Benefit]. As the projects formulated in the IT Strategy don't focus on the fundaments of process management, a stepwise approach to document the current processes using the ITIL: Service Support and Service Delivery framework is suggested. The second variant came into reality in mid 2008: COBIT has been used without success to estimate users' preferences. The reasons of the failure are discussed. Czech translation of COBIT 4.1 maturity models by the author intended to use as one of the tools in the opinion poll is attached as Annex 2. The last variant is not directly aligned to the problems of foreign ministry's IT/IS, but it is the most pragmatic guide to the implementation of the libraries. As an external help desk has been already launched, I suggest the establishment of ITIL Incident Management and Problem Management processes, supported with a CMDB configuration database.

The main objective of this thesis is to meet Governance as a new approach in company organization, especially in IT sector. The idea is about harmonization of IT and business strategy, that should ensure achieving company goals and missions, and lead company in the right direction of advancement, what is directly connected with implementation of relevant measures of IT processes. As chapter "Governance", is describing how this approach should by ensure in whole organization on a different levels. We can translate Governance as implementation of certain best practices and procedures that lead company to process standardization and formalization. The most exercising methodologies and guidelines in IT sphere as ITIL, Val IT, CobiT, ISO 27000 are reviewed in thesis. By these methodologies organizations should be able to better optimize processes and accomplish regulation frame in particular industry. Another very important contribution of process standardization is by providing better possibilities for measurement and assessment, that is reviewed in chapter "Evaluation of IT processes performance". There is also transparent guideline which provides a simple steps procedure how to implement IT Governance in organization using CobiT and Vat IT. As this branch is relatively "young", especially in Czech Republic, management is still familiarizing with it. Last chapter is dedicated to analyze approach to ITG in Czech Republic banking sector.