The document discusses advertising agencies and their structure and functions. It begins by defining an advertising agency as an agency that designs advertisements to attract public attention to its clients. It then lists the top Indian advertising agencies and describes the main departments in an advertising agency, including account servicing, account planning, media, creative, production, and finance/accounting. The document outlines the roles and responsibilities of each department. It also discusses the agency-client relationship and tips for making the relationship successful. Finally, it covers laws and ethics of advertising in India as well as the Advertising Standards Council of India (ASCI).