Case Study: T‑Mobile achieves improved application uptime and faster incident response with VMware Tanzu

How Communication Helps T-Mobile Keep Its Applications Up

T‑Mobile runs a large and growing cloud‑native footprint—about 30 Tanzu Application Service foundations supporting 75,000 application instances and a Kubernetes estate of roughly 90 clusters and 22,000 pods (around 100,000 containers). The challenge was keeping those core, often non‑ephemeral applications available and manageable as the platform scaled, while avoiding slow, fragmented incident response across many teams and channels.

Their approach combined engineering and cultural changes: dedicated Slack customer channels for real‑time notifications and incident reporting, treating all environments as “production,” and a no‑blame, fix‑first mindset that includes proactively helping teams redesign risky architectures. The result was faster detection and resolution of platform issues via customer reports and centralized communication, improved platform reliability for critical services, and smoother migration of core workloads onto the Tanzu/Kubernetes platforms.

T-Mobile

Brendan Aye

Cloud Foundry Platform Architect