LG CNS modernizes 20-year-old enterprise systems with Claude

Claude Code is the engine of its newest offering: LG CNS Build Factory, a turn-key software development service that modernizes decades-old enterprise systems at production scale. “From the customer’s perspective, modernization is clearly necessary, but cost, timeline, and quality risks make it difficult to initiate,” explained Hyosup Bae, Director and Head of Build Center at LG CNS. LG CNS migrated a 20-year-old enterprise system in 7 months at 50% of rebuild cost. The company has built and operated mission-critical systems for financial institutions, manufacturers, and public-sector organizations for more than 35 years.

Agent or tool: Amazon Bedrock
Topic: Software Development
Reported on: Case study (Anthropic)
Added: 2026-11-11

Why it matters

Coding agents are moving from autocomplete to doing whole tasks: reading a codebase, making a plan and changing many files. This case is a concrete example of where that works in practice. It is one of 221 sightings filed under Software Development on Agent Sightings (number 7 by interest), and one of 81 involving Amazon Bedrock.

How you could try it

Here is a reusable prompt, written by us in our own words, that captures the task. Paste it into Amazon Bedrock or any similar agent and adjust the details to your situation.

I want a coding agent to plan first, work on a branch, and show me the diff before anything is merged. The tool in the source case was Amazon Bedrock.

Saved

Tip: Work on a fresh branch, ask for a plan before edits, and review the diff and test results before merging.

Source

Read the original first-hand account on Case study (Anthropic): https://claude.com/customers/lg-cns. Our summary is a paraphrase; details are in the source.

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