CV Systems

Resources

Field notes from the COBOL bench.

Our engineers write up what they find on the way through. Tactical, specific, and free.

8583

Field guide

7 ways your ISO 8583 traffic lies to you

A walkthrough of the most-common, hardest-to-spot mismatches between what your switch logs say and what actually happened on the wire — written for engineers who have seen the basics and need the next layer.

In progress · expected June 2026
90d

Playbook

Hogan to modern core: a 90-day cutover plan

A real-world cutover plan from a Hogan-based mid-size bank to a modern core, including dual-run scaffolding, balance reconciliation, vendor handoffs, and the calendar of a typical war-room week.

In progress · expected June 2026
2026

Industry data

COBOL retirement risk index 2026

A snapshot of the COBOL talent pipeline at the top 200 U.S. banks — average maintainer age, hiring activity, modernization announcements, and a per-bank exposure score.

In progress · expected July 2026

Want one of these in draft form? Email randys@cvsc.com.

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