With the help of information technology such as Big Data, Artificial Intelligence, Internet of Things and blockchain, the information service industry has officially entered the era of intelligent business. In the face of strong horizontal competition, international situation and rapid market changes, resource bottlenecks often appear. Information service providers cannot avoid reengineering or transformation based on their sustainability and growth needs. However, how to formulate a transformation strategy and how to design an intelligent business service system in response to the transformation is a matter of success or failure. In the face of global competition in the domestic market, the Taiwan software industry must be transformed to operate in a sustainable manner. How to optimize business resource allocation, build competitive advantage and enhance performance growth through transformation is an issue that the industry is eager to explore. This study uses case-study methods to analyze the business transformation strategy of business cases caused by business intelligence, and further design and develop intelligent business service systems to create sustainable competitive advantages.