; and (B) tailored to the mission, security, and performance requirements of the respective military installation or other facility. (2) Process for public wireless network service providers (A) Establishment The Secretary shall establish a Department-wide process under which a public wireless network service provider of fifth generation information and communications capabilities may gain access to a military installation or other facility of the Department to provide commercial subscriber services to military and civilian personnel of the Department (including contractor personnel) located at, and organizational elements of the Department maintained at, such installation or facility. (B) Design requirements In establishing the process under subparagraph (A), the Secretary shall ensure relevant system architectures and supporting infrastructure are designed to support modular upgrades to future generation technologies. (3) Determination relating to contract authority The Secretary shall determine, on a contract-by-contract basis or as a determination with uniform applicability to contracts across military installations and other facilities of the Department, whether to enter into a contract for— (A) neutral hosting, under which infrastructure and services would be provided to companies deploying private wireless networks and public wireless network services to such installation or other facility through multi-operator core network architectures