In commercial organisations, advertising, along with other marketing communications activities, is the ultimate responsibility of the marketing department. Some companies outsource part or all of the work to specialists such as advertising agencies, creative design teams, web designers, media buyers, events management specialists or other relevant service providers. Another option is for a company to carry out most or all of the advertising functions within the marketing department in what is known as an "in-house agency". By definition, an in-house agency is a "an advertising organization that is owned and operated by the corporation it serves". Its mission is to provide advertising services in support of its parent company's business and marketing objectives. Well-known brands that currently use in-house agencies include Google, Calvin Klein, Adobe, Dell, IBM, Kraft, Marriott and Wendy's.