Name: Sponsored Demo: Scaling EdTech at Hyperspeed: How PhysicsWallah Reduced Kubernetes Costs Without Slowing Down - Avinash Gupta, Physicswallah & Gaurang Singh, Cast AI
Start: 2026-06-18T14:30:00+0530
End: 2026-06-18T14:50:00+0530

18-19 June
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Sponsored Demo: Scaling EdTech at Hyperspeed: How PhysicsWallah Reduced Kubernetes Costs Without Slowing Down - Avinash Gupta, Physicswallah & Gaurang Singh, Cast AI

Thursday June 18, 2026 2:30pm - 2:50pm IST

205 (Level 2)

PhysicsWallah serves 10 million learners across India, running live classes 24/7 on Amazon EKS. As the platform scaled, Karpenter hit its limits. Spot interruptions were hard to handle gracefully, manual rightsizing consumed SRE bandwidth, and nodes were chronically over-provisioned for traffic spikes that came and went unpredictably.
In this talk, Avinash (Engineering Lead, PW) and Gaurang Singh (Field CTO APAC, CAST AI) walk through how PW adopted CAST AI to automate Kubernetes cost optimization without risking a single live class. Starting with a read-only POC, the team validated 48.67% cost savings before touching production. They then rolled out workload rightsizing (WOOP) and node autoscaling incrementally, cutting CPU requests by 35% in production.
The session covers the adoption playbook, lessons on configuring Pod Disruption Budgets before enabling rightsizing, and why multi-family spot pools outperform manual over-provisioning for spiky edtech workloads.

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Speakers

Gaurang Singh

Field CTO APAC, Cast AI

Gaurang Singh is Field CTO, APAC at CAST AI, where he helps enterprises optimize Kubernetes infrastructure at scale across cloud cost, performance, and automation. He works closely with platform engineering teams in BFSI, telecom, and media industries, specializing in large-scale... Read More →

Avinash Gupta

Senior Director of Engineering, Physicswallah

Avinash Gupta is Senior Director of Engineering at PhysicsWallah, where he leads product engineering and infrastructure across PW's platform and its subsidiaries. With over a decade of experience scaling engineering and infra functions at high-growth organizations, he brings deep... Read More →

Thursday June 18, 2026 2:30pm - 2:50pm IST
205 (Level 2)

KubeCon + CloudNativeCon India 2026

Gaurang Singh

Avinash Gupta

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