Individual skill
guidewire-migration-and-upgrade
Move a Guidewire deployment to a new platform or release without breaking running policies and claims — on-prem→cloud cutover (config reconciliation, data migration, parallel-run validation), in-place version upgrade (e.g., 202403→202503) with deprecated-API regression coverage, rehearsal-driven cutover with rollback path mid-flight, and broker/claimant communication so users hit the right system at the right time. Use when planning a cloud migration, executing a version upgrade, or rehearsing a cutover. Trigger with "guidewire migration", "guidewire upgrade", "guidewire cutover", "guidewire on-prem to cloud", "202503 upgrade".
plugins/saas-packs/guidewire-pack/skills/guidewire-migration-and-upgrade/SKILL.md
Source commit 0500b275e963c027f6b410e8c49c0446945c574e
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- Last checked
- Nov 12, 2026
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- 2,916
- Repository last updated
- Nov 12, 2026
- License
- MIT
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- ai Repository topic
- automation Repository topic
- claude-code Repository topic
- devops Repository topic
- mcp Repository topic
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- anthropic Repository topic
- claude-code-plugins Repository topic
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- llm Repository topic
- guidewire Declared skill tag
- migration Declared skill tag
- upgrade Declared skill tag
- cutover Declared skill tag
- cloud Declared skill tag
- rehearsal Declared skill tag
- devops Derived category
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SKILL.mdcore · 14,261 bytesSKILL.mdcore · 14,261 bytesSKILL.mdcore · 14,261 bytesSKILL.mdcore · 14,261 bytesSKILL.mdcore · 14,261 bytesreferences/API_REFERENCE.mddoc · 7,800 bytesreferences/implementation-guide.mddoc · 6,402 bytes
Read excerpt
# Guidewire Migration and Upgrade
## Overview
Move a Guidewire deployment without losing policies, claims, integrations, or trust. Two related but distinct workflows:
- **Migration**: on-prem InsuranceSuite → Guidewire Cloud (or one cloud tenant → another). Different infrastructure, different config-layer assumptions, different API surfaces.
- **Upgrade**: in-place version bump (e.g., release `202403` → `202503`). Same infrastructure, new code, new APIs, deprecated APIs to retire.
Both are heavy lifts that go badly if executed without rehearsal. Five production failures this skill prevents:
1. **Config reconciliation gaps** — on-prem carries 5 years of customizations; cloud tenant ships with newer base config; cutover deploys the on-prem config and breaks because base assumptions diverged.
2. **Deprecated-API blind spots** — version upgrade removes a Cloud API that an integration depended on; the integration starts returning 404 the moment the upgrade lands.
3. **No mid-flight rollback** — cutover starts at midnight, fails at 2am, decision is "abort or push through"; without a pre-defined abort path the team chooses badly.