Camarilla policy is that vampires should try to fit in with and hide from the rest of humanity, as to easily feed on them. For this reason, they created a web of lies and misinformation, called the Masqurade, to make the public believe that supernatural beings like vampires could not possibly exist.
The Camarilla also believes that the only way the vampire species can survive in these modern nights is if it unites - any breach of the Masquerade by any vampire risks exposing the entire race. Both viewpoints are fundamentally opposed by the Sabbat.
The Camarilla is a global structure on top of a collection of feudal domains. The most fundamental institutions of vampire society, as outlined by the Six Treditions of the Masquerade, are maintained by the Camarilla; consequently, Camarilla cities have a Prince, Primogen, Elysium and all the other accoutrements of vampiric existence. On top of this structure, however, is a global organization, largely enforced through the Justicars and their assistants, the Archons. This global structure is largely focused on eliminating threats to all clans and the Masquerade.