What defines a Legacy System?

A legacy system is defined as a computer system that is no longer supported by its vendor. This typically means that the manufacturer has ceased providing updates, technical support, or replacement components, which can pose significant risks and challenges for organizations relying on such systems. Legacy systems may still function adequately for certain tasks, but they may lack modern security features and updates, making them vulnerable to threats. As a result, organizations often find it difficult to integrate these systems with newer technology or practices, increasing operational risks and costs over time.

In contrast, open-source systems are characterized by ongoing community support and regular updates, while innovative systems boast enhanced security features and are designed to address current technology needs. Contemporary systems, on the other hand, are built to effectively accommodate modern protocols and standards. Hence, the distinctive aspect of a legacy system lies in its discontinuation of support from the vendor.