Summary of Stack Overflow’s Datacenter Closure
This text details the complete closure of Stack Overflow’s physical datacenters and their full transition to the cloud. Here’s a breakdown of the key points:
* full Cloud Transition: stack Overflow has officially moved all its infrastructure to the cloud – Stack Overflow for Teams to Azure in 2023, and the public sites (Stack Overflow and the Stack Exchange network) to Google Cloud.
* Datacenter Shutdowns: They closed two datacenters: one in New jersey (forced closure by the vendor, deadline July 2025) and one in Colorado (decommissioned in June, primarily for disaster recovery which was no longer needed).
* No more physical Presence: Stack Overflow now operates entirely in the cloud and with a remote workforce – they have no physical datacenters or offices.
* Significant Effort: The process involved unracking 50 servers and disconnecting a large number of cables (8+ per machine).
* Cable Breakdown: The text details the purpose of each cable type: management network, KVM access, network connectivity (10G ethernet), and redundant power.
* Emotional Impact: The decommissioning was bittersweet for some engineers who had recently installed the hardware.
* No Hardware Reuse: Unlike typical datacenter closures, they didn’t preserve any machines for relocation.
The post is accompanied by pictures of the servers and cables, highlighting the scale of the operation. It also acknowledges the SRE team and others involved in the successful migration. They plan to publish more detailed blog posts about the technical aspects of the cloud migration soon.
