The subject of the public contract is to ensure the development and support of the software of the Statistical Information System of the contracting authority SIS 5.0 in order to modernize the Statistical Information System for internal and external users at input and output and to simplify their work by wider use of data from administrative data sources, by implementing a self-service portal, upgrade technologically obsolete components and reduce the operating costs of data systems; Furthermore, the aim is to ensure compliance of the SIS with the current legislation and the national Information Concept of the Czech Republic and the strategic work of the ČSÚ. A detailed specification of the subject-matter of the contract is set out in Annex No. 1 procurement documentation – 'Detailed technical specification of subject-matter of the VZ' and Annex No 7 of the VD 'Deion of SIS environment and NPO SIS 5.0 projects'.