purveyor

Short definition from Wiktionary

Noun

1. 1
   One who purveys (“furnishes, provides; gets, procures”); a supplier; specifically, one in the business of supplying food or other necessary material goods; a provisioner.
2. 2
   One who purveys (“furnishes, provides; gets, procures”); a supplier; specifically, one in the business of supplying food or other necessary material goods; a provisioner: An officer who obtained provisions such as accommodation and food for the household of a monarch or some other high-ranking person; also, an officer in charge of obtaining provisions for an army, a city, etc.
3. 3
   A person or group that promotes or spreads an idea, a viewpoint, etc.
4. 4
   One who arranges or prepares something; an arranger, an orchestrator, a preparer.