Digital Transformation for Legacy Insurers: A Practical Roadmap

Start with your policy administration system. Most legacy carriers still run core processing on mainframes that handle 70 percent of their book. Map those flows before you buy any new software.

Map your current setup

Walk through one product line end to end. Note every handoff between the policy system, billing files, and claims notes. You will usually find three or four manual steps that eat days.

Use this quick checklist for the first pass:

• List every COBOL or RPG program that touches a policy record
• Identify which batches run nightly versus weekly
• Mark any data that still moves on flat files or FTP
• Count how many people touch a single new business submission

One Midwest mutual did this for auto and found 14 separate approvals. They cut it to four after the map alone.

Run a single pilot

Pick one narrow slice, such as small commercial renewals or first-party property claims under $25,000. Leave the mainframe in place and build an API layer around the parts you need.

Follow these steps in order:

1. Expose the policy extract as a read-only service
2. Build a lightweight web form that calls that service
3. Route the output to your existing billing job
4. Run parallel for 60 days, then compare error rates

Keep the pilot team under six people. Larger groups slow everything down when you hit the first data mismatch.

Handle data movement

Most delays come from moving data between old and new systems, not from the new code itself. Test with real volumes early.

Track three numbers during the pilot: time from submission to bind, straight-through rate, and manual touches per file. Share those numbers with the business owners every two weeks.