April 15, 2025
How Fastweb Enriched its FASTcloud Platform with Kubernetes and Clastix Multi-Tenancy
Deploying hyperscale-like KaaS for hundreds of customers with upstream Kubernetes and Clastix Capsule.
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REDUCE THE COST OF RUNNING KUBERNETES AT SCALE
- Company
- Fastweb S.p.A.
- Website
- fastweb.it
- Headquarters
- Milan, Italy
- Industry
- Telecommunications / Cloud Services
- Employees
- ~7,000
- IT environment
- FASTcloud, private, public and multi-cloud
- Clastix offering
- Capsule & Clastix Care
- Use case
- Container-as-a-Service · Multi-tenant Kubernetes
AT A GLANCE
Challenge
Traditional cloud architectures were too expensive and slow to operate at Fastweb's scale.
Solution
A hyperscale-like Kubernetes platform with Clastix multi-tenancy serving hundreds of tenants from one architecture.
Outcome
Unprecedented operational agility and scalability at a fraction of the previous infrastructure cost.
SUMMARY
Success story overview
Fastweb, a leading Italian telco and cloud provider, needed to evolve its FASTcloud platform beyond traditional, enterprise-first architectures that were too expensive and slow to operate at cloud-native scale. Partnering with Clastix, Fastweb built a hyperscale-like Kubernetes platform powered by Clastix Capsule, enabling container-as-a-service for hundreds of customers from a single multi-tenant architecture, with strong tenant isolation, self-service provisioning and full GitOps automation.
Two decisions were taken at the front end of the project: to improve efficiency by leveraging a modern, highly automated hyperscale-like approach running on Kubernetes, and to architect multi-tenancy from the start rather than retrofit it. The journey from concept to validation to production was made with Clastix engineering, from consultancy through to implementation of the Capsule multi-tenancy operator, on Kubernetes clusters running Canonical Ubuntu across Fastweb's certified Tier-IV data centres.
Fastweb has since entered production with new services on a modern container platform. The extensive automation enabled by Kubernetes and Clastix's multi-tenancy solutions lets it manage hundreds of customers with fewer hardware resources and far less operational effort — hyperscale-like agility without proprietary vendor lock-in.
KEY REQUIREMENTS
- Self-service provisioning without manual intervention
- Hard multi-tenancy with strong resource isolation
- Upstream Kubernetes — no vendor lock-in
- GitOps-ready, declarative automation
- Support for a multi-cloud strategy across private and public estates
KEY OUTCOMES
- Hundreds of customers served from one multi-tenant architecture
- Hyperscale-like automation without vendor lock-in
- Reduced hardware footprint through multi-tenancy — more customers, fewer resources
- Operations teams freed for higher-value services work
- A full GitOps-ready model from day one
“We are proud of the step forward we have taken with the new architecture, and we are very pleased to have partnered with the Clastix team for their deep expertise and unique approach to Kubernetes. Implementing cloud native services with Clastix has been a great experience, and we look forward to continuing to grow with it.”
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