DATEV's presentation will showcase the progress made in COBOL/Java interoperability since the initial insights shared at IBM Z Day 2023. Armin Kramer (Software Engineer at DATEV and IBM Champion), alongside Philipp Kremling (Software Engineer and Student at DATEV), will collaboratively deliver the talk. The session will delve into the refined automation processes, the successful implementation of calls from COBOL to Java, and the ongoing experimentation with Java Interlanguage Batch (JIB). Attendees can anticipate a comprehensive update on DATEV's current status, highlighting the strides taken in COBOL and Java interoperability functionalities within the IBM Z ecosystem.