A legacy system is an old computer system, software application, or technology that is still being used, even though newer and more advanced alternatives are available. Such systems often continue to operate because they perform important business functions, store valuable... Read More
A legacy system is an old computer system, software application, or technology that is still being used, even though newer and more advanced alternatives are available. Such systems often continue to operate because they perform important business functions, store valuable data, or are expensive to replace. Therefore, Option D (Legacy system) is the correct answer.
Many organizations, including banks, government departments, hospitals, airlines, and large companies, continue to use legacy systems because they have been reliable for many years. Replacing these systems may require significant time, cost, and effort, and there is always a risk of data loss or service interruption during migration. For this reason, organizations often maintain legacy systems while gradually upgrading their technology.
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