**2. Review of the quality approach in tourism**

Focusing on quality has become one of the key success factors for the tourism service providers and tourism industry in general. Current quality approach in tourism is the result of growing various consumers' needs, in the context of highly increasing competition, market globalization, and development of modern technology.

The quality approach in tourism is a dynamic process that has evolved over time with the development of the tourism sector. A comprehensive review of this evolution is presented below. The analysis includes quality and environment models used in the tourism industry, as follows: (1) general models for quality evaluation and certification; (2) specific models for classification of the tourism organizations and quality certification; (3) quality approach in tourist destinations; and (4) environmental models and marks. A brief synthesis of the quality approach in tourism, stages, and trends is presented at the end.
