The support, maintenance and modernization of these host applications requires in-depth specialist and programming knowledge. Legacy applications are almost always an evolved mixture of programs, databases, interfaces, middleware and other components. In many cases, very complex IT infrastructures have developed over decades, consisting of countless sub-applications. These are mainly programmed in COBOL, a comparatively old programming language. This was developed back in the 1950s and is still widely used in host applications today. It is therefore hardly surprising that the required specialist knowledge and understanding of the intricacies of such hosts is rapidly declining, making it increasingly difficult to further develop or even modernize such applications at the required pace. This is due to both the loss of experienced and highly qualified IT experts in companies and the lack of qualified junior staff. However, many companies are still reluctant to migrate their business-critical host workloads to the cloud, for example, and replace their legacy systems in order to become more agile and customer-friendly. The risk of migration errors, very long migration periods and expected system downtimes, as well as the almost non-existent know-how about the old processes, is too great. All of these criteria can make such migration considerably more difficult and, in the worst case, even threaten the existence of the company. This is exactly where our experienced mainframe team comes into play and supports you as a competent modernization partner for your legacy systems. We support you in maintaining the functionality of your host infrastructure in the long term.