In marketing, a corporate identity is the "persona" of a corporation which is designed to accord with and facilitate the attainment of business objectives. It is usually visibly manifested by way of branding and the use of trademarks.
In general, this amounts to a corporate title, logo (logotype and/or logogram), and supporting devices commonly assembled within a set of guidelines. Logos, Letterheads, Website, Facebook, Twitter, etc. These guidelines govern how the identity is applied and confirm approved colour palettes, typefaces, page layouts and other such methods of maintaining visual continuity and brand recognition across all physical manifestations of the brand.