Legacy software and its supporting technologies and systems can lead to fragmentation of data warehouses throughout the organization: this significantly complicates the work and interaction of employees, blocks access to data, and slows down decision making. As a result, you have trouble interacting with your customers and delivering the value they are looking for.
The redundancy of processes and components in legacy systems also increases the cost of maintenance: it drains your resources and makes it impossible to invest in development and drive innovation.