AWS Migration Hub is basically a project management dashboard for your cloud migration. Instead of losing track of which servers you've moved, which ones are still causing you problems, and which team member forgot to migrate that random database that somehow runs your entire payment system.
Why You Actually Need This
Migration Dependencies Visualization: Complex networks of interconnected servers where one dependency can bring down entire systems during migration.
Migration tracking is a complete nightmare without centralized tools. I've seen teams lose track of dependencies and bring down prod during cutover because nobody remembered that the accounting system talks to a random server in the basement that hasn't been rebooted since 2018.
AWS Migration Hub gives you a single place to see:
- What shit you've already moved
- What shit is currently being moved
- What shit is broken
- What shit you forgot about
The AWS Cloud Adoption Framework recommends centralized migration tracking for a reason - distributed teams managing complex enterprise migrations without coordination is a recipe for disaster. Gartner research shows that failed migrations cost 3-5x the original budget in cleanup.
How It Actually Works
The platform connects to AWS Application Discovery Service to automatically find all your servers and their dependencies. You can install Discovery Agents on each server (which will max out CPU on old boxes - don't do this during business hours) or use agentless Discovery Collectors if you're running VMware.
The discovery process maps out your server dependencies, though it'll miss the weird ones that always crash everything during cutover. The Strategy Recommendations feature analyzes your apps and suggests migration approaches, but take these with a grain of salt - it doesn't know about your legacy authentication nightmare or the custom Oracle setup that requires sacrificing a goat to restart.
What You Get From It
Dependency Mapping: Shows which servers talk to each other. Finds 90% of dependencies, but it's that missing 10% that kills your weekend. At least you'll know about most of them ahead of time.
AWS Migration Hub Dashboard: Centralized view showing migration progress, server status, and dependency mapping across all your migration projects.
Migration Tracking: Integrates with AWS Application Migration Service and AWS Database Migration Service to show migration progress. The status updates are mostly accurate, except when things fail silently. Works with AWS Server Migration Service too if you're still using that.
Team Coordination: Role-based access so your junior dev can't accidentally trigger a production migration at 2 AM. Though they'll find a way anyway. Integrates with AWS Identity and Access Management for proper permissions management.
Journey Templates: Pre-built checklists for common migration patterns. These work fine for simple stuff, but anything with custom auth or weird networking requires manual work. The AWS Migration Hub Journeys feature tries to template complex migrations, but expect to customize everything.
Real Talk on Limitations
- Discovery agents can overwhelm old servers - check the system requirements before installing
- The "automated" migration still needs babysitting because AWS tools randomly timeout
- Migration estimates are like software estimates - double them and add 6 months. See the AWS Migration Acceleration Program for realistic timelines
- Migration Hub Refactor Spaces sounds cool until you realize it's just AWS trying to sell you more services
- Network visualization only works if you install agents everywhere, which you won't
- Home region limitations mean you can't change regions without losing data
- Migration Hub Orchestrator promises automation but requires custom scripts for anything complex
- CloudFormation integration is limited and doesn't support all Migration Hub features
- API rate limits kick in during large migrations without warning
- Cost tracking doesn't integrate well with migration progress tracking
- Security compliance audits require manual work to correlate migrated assets
- Third-party tool integration often breaks during AWS service updates
Migration Hub is free, which means you get what you pay for in terms of hand-holding. But it beats Excel spreadsheets for tracking migrations, which is a pretty low bar.