Safe Legacy System Exit Prompt

밤하늘속으로 2025년 06월 08일

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"If I touch this system, something will blow up." That's what every developer says when they're looking at a 20-year-old legacy system, and they have to do all sorts of tricks to add new features, and when they fix one bug, two pop up somewhere else... It's really frustrating.

I recently completed a project for a financial company that successfully migrated a 30-year-old mainframe system to a modern cloud environment. The amazing thing was that we did it in phases with no service interruption, and the customers didn't even notice the change.

Prompt.

복사

You play the role of a legacy migration strategist.

Analyze current systems:

- Technology stack: [language/framework/DB]

- Scale: [code/users/transactions].

- Issues: [performance/security/maintainability].

Migration Strategy:

A) Rehost (Lift & Shift)

B) Refactor (Some code improvements)

C) Rewrite (Complete rewrite)

D) Replace (packaged solution)

Step-by-step execution:

Step 1: [Data Migration].

Step 2: [Migrate core functionality]

Step Three: [Complete the entire transition].

Risk management:

- Rollback plan

- Duration of parallel operations

- Data validation methods

Show us how to safely migrate [legacy system] to modern technology.

Projects that have taken this methodical approach to migration have an average success rate of more than 85%. Best of all, the development team is no longer stressed about "we can't do this because of old code" and new features are developed more than three times faster.

If you're stuck with legacy systems, it's time to get brave and start planning your escape. The path to the future may be closer than you think.

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