ownership

noun2

1. •
   The state of having complete legal control of something; possession; proprietorship.

   • In the summer, DCC [Devon County Council] transferred ownership of the northern part of the station to NR for a nominal £1, enabling it (and the platform) to become part of the rail network. — 2021
2. •
   Responsibility for or control over something.

   • The successful candidate will take ownership of all internal design projects.