Learning the challenges of legacy systems
A legacy application presents significant challenges for an organization. On the one hand, there are critical applications that an organization has been using for decades. On the other hand, legacy applications are holding back the organization's pace of innovation.
In a hugely competitive environment, end users are looking for the most modern, technologically advanced applications. All new features usually come with the latest software, and legacy applications limit your ability to add those features and benefit end users. The following diagram shows some significant challenges that organizations are facing with legacy systems:
Figure 17.1: Challenges with a legacy system
At the top level, the CIO owns an application portfolio that represents the business processes of the organization. The portfolio of applications can be from hundreds to thousands depending upon the organizations' size. There are four discernable...