Tourism firms operate in a business environment in which innovation is important for firm survival. In spite of this, this book and its chapters combine considerations about tourism development. The growth of tourism refers to the gradual evolution of tourism which is an important factor for the productivity of a country's economy. When is measured the economic impact of tourism, it should be underline the essential causality among real GDP, REER and international tourism. There is need to understand the essential meaning of international tourism and trade, which are expected to be quite dependant on the exchange rate regimes. The international trade is another argument commonly used to justify the exchange rate policy. So, tourism should be seen as a moving factor with an important contribution for the economies.