Agent Skills: application-migration

Guides comprehensive application migration projects including legacy system modernization, cloud migration, technology stack upgrades, database migration, and architecture transformation. Covers assessment, planning, migration strategies (strangler fig, big bang, phased), risk management, data migration, testing, and cutover. Use when migrating applications, modernizing legacy systems, moving to cloud, changing technology stacks, or when users mention "migration", "modernization", "replatform", "lift and shift", "refactor", "strangler pattern", or "legacy transformation".