Modernization strategies could be employed to facilitate problem framing and decision-making. Architecture-driven modernization, WMU, Renaissance, or SABA. Some of them are attempts to standardize the modernization approach. Another help to choose the maintenance approach and adapt it according to customer satisfaction level. There are strategies that evaluate modernization from different angles like business and technical. They could also provide hints on how to deal with people's issues. Other models facilitate mapping intersections between software quality and business impact or streamline the modernization process by applying reverse engineering practices.