Over time, I-series has evolved to support a lot of new technologies.. More and more companies are undertaking projects to re-write old RPGIII applications using RPGIV and newer ILE techniques, which helps create a central business function repository with the help of Service programs. This not only lowers the maintenance cost, but also aids in re-usability of existing code, and in re-organizing intellectual assets into a readily accessible knowledge base. This also helps make the AS/400 application friendlier to external applications and diverse platforms. Opus' I-series core team has valuable expertise in re-engineering old legacy applications.