Which of the following is an essential characteristic of legacy systems?

Legacy systems are defined by their reliance on older technology infrastructure. These systems are typically established and operational but may not have been updated in years or even decades. They often run on outdated programming languages, hardware, and network protocols that may no longer be supported or efficient.

While modern cloud integration, frequent software updates, and the use of updated technology are features associated with contemporary systems, legacy systems are characterized by their resistance to change and the challenges they pose for integration with modern applications and cloud services. This reliance on older technology often leads to issues such as security vulnerabilities, lack of compatibility with newer systems, and difficulties in finding support or developers familiar with the older technologies. Thus, the identification of an essential characteristic of legacy systems as older technology infrastructure accurately reflects the nature and challenges these systems present within an organization.