noun
aegis
EE-jis/ˈiːdʒɪs/
Protection or support from a powerful person or organization
The small boat shelters under the aegis of the rescue crew.

Etymology
The aigis was Zeus’s shield. Its protective role became an image for the security afforded by a powerful patron, extending physical shelter to sponsorship and support.
In context
As broadcasting took off in the 1920s, there are a series of meetings among European broadcasters to apportion wavelengths to particular companies to avoid interference. This was done under the aegis of the presumptuously named International Broadcasting Union
More examples
- Several charities worked together under the city's aegis.
- The school opened under the aegis of a local foundation.
- Under her aegis, the young artists found funding and space.
Similar words
- patronage
- Often means financial support or sponsorship from an influential person.
- protection
- Emphasizes safety rather than sponsorship or organizational backing.