EngineeringMay 4, 2026
Why a Terraform plan is not a forecast
The plan tells you which resources will change. It does not tell you what will happen. The difference, in production, is everything.
Blog
Field notes from the platform.
Engineering essays, architecture deep dives, and reflections from the teams using and building InfraTwin.
FinOpsApr 22, 2026
FinOps as a code-review checkbox
Monthly cost reviews are too late. We rebuilt our forecasting model so the right delta shows up at PR time, with reserved coverage baked in.
SecurityApr 9, 2026
Effective access is harder than policy text
Policy diffs lie. Role chains and federation make real authorization opaque. Here's how we model effective access continuously.
PlatformMar 28, 2026
Simulating Kubernetes rollouts that aren't lies
Staging clusters don't behave like production. We rebuilt our scheduler simulation to replay realistic disruption and saturation.
CompanyMar 12, 2026
The pager that paged us into a product
InfraTwin started as an on-call notebook. Here's the journey from a 3am incident to a platform used by thousands of engineers.
SecurityFeb 25, 2026
Read-only is a feature, not a fence
Every connector is read-only — and that constraint shaped a better product. A meditation on least privilege in platform tooling.