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Education

Migrated EdTech Platform to GCP in 6 Weeks

6 weeks
3 engineers
EdTech Series A
GCPGKETerraformMongoDB AtlasCloud CDN
70%
Cost Reduction
65%
Latency Drop
50K
Concurrent Users
Zero
Downtime
Platform Transformation
Metric
Before
After
Monthly Cost
$18,000
$5,400 -70%
Response Time
5+ sec
<100 ms 50x faster
Concurrent Users
5K (limit)
50K 10x capacity
Downtime
Exam disruptions
Zero Eliminated
EdTech GCP migration architectureEdTech GCP migration architecture
GCP Cloud Migration Architecture — Multi-Region Scalability

The Challenge

EdTech platform on Heroku hitting performance limits during exam periods. $18K/month for infrastructure that couldn't handle concurrent exam loads.

✗Heroku dynos maxing out during exam periods
✗Response times exceeding 5 seconds under load
✗$18K/month for basic infrastructure
✗No autoscaling capability for predictable exam surges

Our Solution

Full migration to GKE with Terraform-managed infrastructure, MongoDB Atlas for database, and custom autoscaling tuned to academic calendar patterns.

Containerized 12 microservices with Docker multi-stage builds
Deployed to GKE with Terraform modules for reproducibility
Migrated MongoDB to Atlas with zero-downtime sync
Configured pre-emptive scaling based on exam calendar
Set up Cloud CDN for static assets and video content
Results & Impact

Platform handles 50K concurrent students during finals with sub-100ms response times.

Project Timeline

Week 1
Architecture design, Terraform scaffolding
Week 2-3
Containerization and GKE deployment
Week 4
MongoDB Atlas migration with live sync
Week 5
Load testing — validated 50K concurrent users
Week 6
DNS cutover, monitoring, post-migration support
VE

"We outgrew Heroku. CloudLink migrated us to GCP without a single minute of student downtime."

VP Engineering
EdTech Series A

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