An elevator system , comprising: an elevator controller ; at least one elevator car which is movable under control by the elevator controller between floors (L0, L, L1, Ln) of a building in an elevator shaft and has two car doors , a first car door on a first car wall and a second car door on a second car wall ; and a number of shaft doors which separate the elevator shaft from the floors (L0, L, L1, Ln), wherein a first group of shaft doors is arranged in public zones (Zp1, Zp2) of the building and a second group of shaft doors is arranged in non-public zones (Zs1, Zs2) of the building , characterized in that the elevator controller comprises: - a first operating mode according to which the elevator controller is designed to move the elevator car between the floors (L, L0) and to serve the public zones (Zp1, Zp2), wherein, on a floor (L, L0) to be served, the elevator controller controls an opening of the car door which on the floor (L, L0) to be served initiates an opening of the shaft door arranged in the public zone (Zp1, Zp2) there, and - a second operating mode according to which the elevator controller is designed to move the elevator car between the floors (L, Ln) in order to serve the non-public zones (Zs1, Zs2), wherein, on a floor (L, Ln) to be served, the elevator controller controls an opening of the car door which on the floor (L, Ln) to be served initiates an opening of the shaft door arranged in the non-public zone (Zs1, Zs2) there. an elevator controller ; at least one elevator car which is movable under control by the elevator controller between floors (L0, L, L1, Ln) of a building in an elevator shaft and has two car doors , a first car door on a first car wall and a second car door on a second car wall ; and a number of shaft doors which separate the elevator shaft from the floors (L0, L, L1, Ln), wherein a first group of shaft doors is arranged in public zones (Zp1, Zp2) of the building and a second group of shaft doors is arranged in non-public zones (Zs1, Zs2) of the building , characterized in that the elevator controller comprises: - a first operating mode according to which the elevator controller is designed to move the elevator car between the floors (L, L0) and to serve the public zones (Zp1, Zp2), wherein, on a floor (L, L0) to be served, the elevator controller controls an opening of the car door which on the floor (L, L0) to be served initiates an opening of the shaft door arranged in the public zone (Zp1, Zp2) there, and - a second operating mode according to which the elevator controller is designed to move the elevator car between the floors (L, Ln) in order to serve the non-public zones (Zs1, Zs2), wherein, on a floor (L, Ln) to be served, the elevator controller controls an opening of the car door which on the floor (L, Ln) to be served initiates an opening of the shaft door arranged in the non-public zone (Zs1, Zs2) there. - a first operating mode according to which the elevator controller is designed to move the elevator car between the floors (L, L0) and to serve the public zones (Zp1, Zp2), wherein, on a floor (L, L0) to be served, the elevator controller controls an opening of the car door which on the floor (L, L0) to be served initiates an opening of the shaft door arranged in the public zone (Zp1, Zp2) there, and - a second operating mode according to which the elevator controller is designed to move the elevator car between the floors (L, Ln) in order to serve the non-public zones (Zs1, Zs2), wherein, on a floor (L, Ln) to be served, the elevator controller controls an opening of the car door which on the floor (L, Ln) to be served initiates an opening of the shaft door arranged in the non-public zone (Zs1, Zs2) there. <EOS>