More than 70% of CXOs of global companies consider mainframe or legacy modernization a strategic business priority for the next three years, a Tata Consultancy Services survey reveals. Over two-third of the respondents are using legacy or mainframe applications for core business operations and over 60% for customer-facing functions. The main barriers to migrating legacy systems to the cloud were concerns around security (44%), disruption to operations (37%), and reliability (33%) The top three challenges with legacy systems were integration with new applications (61%), lack of business agility (57%), and security exposure (55%)
Source: https://www.helpnetsecurity.com/2021/02/19/mainframe-legacy-modernization/