Interacting with the trends of the concept of sustainable development and trying to achieve it in cities, this thought faced many challenges, especially in the relationship between economic growth and preservation of resources, and since then many trends emerged towards achieving balance between economic growth and achieving sustainability in cities such as (Sustainable City, Eco City, Green City, etc…) and the emergence of environmental economics related to them, leading the trend towards Sustainable Smart City (SSC).The concept of Sustainable Smart Cities (SSC) helps us to achieve the balance between the environment and economic growth. That concept based on the resource of information and communication technologies of smart economy. In addition, it seeks to develop all sectors of the city towards smartness.The sector of economy is one of the most important sectors in the city, because it affects the development and construction of city, so it's better to apply smart economy.The aim of the research is to adopt the global directives supporting the smartness in cities. So the research designs a rapid initial monitoring of the factors of cities which tries to build smart economies. It helps countries like the Case Study "Egypt" to identify development hotspots in order to facilitate proper development decisions. Because one of the biggest gaps experienced in Egypt where there are no indicators and measurements to measure smartness potential of economy sector. So, the concept of designing a rapid rating system facilitates Egypt to build smart economy.