(eng): One of the current drivers for transitioning from the traditional E-Government to the digital government is the ability to create and share new services in the governmental ICT landscape. The government must effectively communicate and offer its services to itself (G2G) and outside, be it an end-consumer or business (G2C, G2B). Since the government is internally divided, there is a need to measure its parts' performance for effective management. However, conventional maturity models cannot address and explain the cause of the differences, and thus typically respond to symptoms and show just winners and losers of the given benchmark. From this position, a study and a deeper analysis of the maturity model used in the public administration of Czechia are provided. Further analysis was undertaken via Bayesian networks to answer the question: How do project management and prioritization affect service level management? Or how the enterprise architecture as a method is linked to the overall organization's performance? Significant relationships were identified, and the use of the Bayesian network as a prediction model was proposed. Further evaluation steps and research opportunities were discussed.