> Term
migration planning
The meticulous preparation process required to execute data movements, schema updates, or infrastructure transitions safely.
Detailed Explanation
Migration planning is the architectural and operational exercise of determining how to move from State A to State B with minimal risk. It involves defining sequence, analyzing dependencies, estimating downtime windows, and drafting rollback procedures.
For critical systems, this involves dark launches, dual-writes, and running old and new systems in parallel before finalizing the cutover.
Why It Matters
Hope is not a strategy. Poor migration planning is the leading cause of massive, multi-day production outages and irrecoverable data loss.
Common Failure Mode
Practical Example
Production Manifestation
Migration runbooks, cutover checklists, load testing the migration scripts, and architecture decision records (ADRs).
Frequently Asked Questions
What is migration planning in short?
The meticulous preparation process required to execute data movements, schema updates, or infrastructure transitions safely.
What is the most common failure mode?
The team successfully tests the migration on a 10MB dev database, but the script takes 14 hours to run on the 5TB production database, blowing past the planned maintenance window.
AI Summary
The meticulous preparation process required to execute data movements, schema updates, or infrastructure transitions safely. Hope is not a strategy. Poor migration planning is the leading cause of massive, multi-day production outages and irrecoverable data loss.