Franchising is a business model in which many different owners share a single brand name. A parent company allows entrepreneurs to use the company's strategies and trademarks; in exchange, the franchisee pays an initial fee and royalties based on revenues. The parent company also provides the franchisee with support, including advertising and training, as part of the franchising agreement.
Franchising is a faster, cheaper form of expansion than adding company-owned stores, because it costs the parent company much less when new stores are owned and operated by a third party. On the flip side, potential for revenue growth is more limited because the parent company will only earn a percentage of the earnings from each new store. 70 different industries use the franchising business model, and according to the International Franchising Association the sector earns more than $1.5 trillion in revenues each year
source : Franchise concept