1. The EES shall be composed of:
(a)
a Central System (EES Central System);
(b)
a National Uniform Interface (NUI) in each Member State based on common technical specifications and identical for all Member States, enabling the connection of the EES Central System to the national border infrastructures in Member States in a secure manner;
(c)
a Secure Communication Channel between the EES Central System and the VIS Central System;
(d)
a Communication Infrastructure, which shall be secure and encrypted, between the EES Central System and the NUIs;
(e)
the web service referred to in Article 13;
(f)
the data repository, established at a central level, as referred to in Article 63(2).
2. The EES Central System shall be hosted by eu-LISA in its technical sites. It shall provide the functionalities laid down in this Regulation in accordance with the conditions of availability, quality and speed pursuant to Article 37(3).
3. Without prejudice to Commission Decision 2008/602/EC (38), certain hardware and software components of the Communication Infrastructure of the EES shall be shared with the communication infrastructure of the VIS referred to in Article 1(2) of Decision 2004/512/EC. Logical separation of VIS data and EES data shall be ensured.