IT consolidation in the public sector refers to the strategic merging of data centres, networks, applications, and IT services previously operated in a decentralised manner across various agencies. Goals include reducing operating costs, improving IT security, and standardising processes and interfaces. Typical measures include server virtualisation, cloud migration, and the establishment of shared service centres. Critical factors are data migration complexity, dependencies on legacy systems, and coordination between participating authorities. Successful consolidation creates the technical foundation for agile and scalable government IT, enabling faster deployment of new services and more resilient infrastructure management.