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FinOps: IT Infrastructure Optimization

145→114 VMs, norms CPU 70-90% P98 / RAM 70-80% P95 / HDD 65-80% P100, 5 savings categories

At a glance
VMs: 145 → 114 (−21%)

CTO / Technical Director

1.5 года · 5 чел

  • Prometheus
  • Grafana
  • Zabbix
  • VMware
  • ELK
  • FinOps Framework

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Problem

What doesn't work

IT infrastructure of 900+ servers grew organically: each product requested dedicated resources with margin, utilization was low (CPU <30%, RAM <40%). Costs grew linearly. No utilization norms: 145 virtual machines, many loaded at 10–20%.

Solution

Architectural approach

Implemented FinOps approach with specific utilization norms: CPU 70–90% (P98), RAM 70–80% (P95), HDD 65–80% (P100). VM consolidation: 145→114. Five savings categories: VM optimization, server consolidation, license optimization, decommissioning, open-source migration. Per-system analysis of each product.

My role & contribution

CTO / Technical Director

Developed percentile-based utilization norms methodology (P95/P98/P100 instead of averages). Personally analyzed all 145 VMs. Defined 5 savings categories and the 145→114 VM consolidation plan. Implemented monthly FinOps reporting with budget review.

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Serbia-based · CET/CEST timezone · EU-aligned working hours · International contracts experience