Legacy systems are integral to the operations of many companies. They’re highly unique in their functionality and can differentiate one company from another. That makes them extremely difficult to retire given their size and complexity. As such, businesses must weigh their options when choosing how to modernize and stay relevant in their market. Choosing to do nothing about their legacy systems could render a company irrelevant or obsolete. However, making the wrong choice could lead to more pain, money, and IT complexity.