Migrations
Migrating 45 services from EC2/systemd to EKS — and cutting deploys 4.5×
A field report from leading a platform migration of 45 services and 250+ instances at a multi-tenant SaaS company.
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EC2/systemd → EKS
45 services · 250+ instances
Stub. Full post body to follow.
The short version: we moved 45 services off long-lived EC2 instances and onto EKS without a maintenance window, cut deploy times from 90 minutes to 20, and turned on autoscaling for the first time.
// RELATED
2026-04-10 · 6 min · MIGRATIONS
Cascading dep hell: Java 8 → 17 across 35 services
End-of-support runtimes don't just block CVE fixes — they block every transitive update that depends on them. A field report from a 35-service upgrade.