Sustainable development is now often mentioned in connection with the further direction of our planet, our economy and the overall human consumption. That is the reason why the companies come with various types of innovation. The use of information technology is now an essential part of our life, our business, our marketing. This area of using computers and their information technology equipment requires a new - greener approach. This post reflects the need for sustainable computing and different approaches to its implementation to the business. We deal with the categorization of green computing performance metrics. One factor of green computing is also the customer and what he wants. Focus on customers’ requirements forced the companies to look to the markets and customers as the main drivers of their business in the area of sustainable computing. The contribution also includes the results of the research of Slovak companies approach to sustainable computing in the Slovak business environment.