Super smooooth, nice use of C4D's sky too, the cloud swirls looks really convincing.
Bizarrely I was working on a similar quickie job last week, link here. It's a background for an award ceremony so nothing much happens, it loops after around a minute (this is a shortened version) - the names of the award winners were added onto the right as they were announced. The logo of the company is a cartoony sun, hence the rather clumsy twirly rays.
Depressingly of course, it's nowhere near as classy
Must be something about working in UK in November that makes people think of palm trees, beaches, soft waves...
Cheers - C