AWS is Amazon's public cloud — several hundred services for compute, storage, data, messaging and identity, all created, permissioned, logged and billed through one API. For an engineering team in Pune the first fact worth internalising is not the size of that catalogue but its geography. The nearest region, ap-south-1, sits in Mumbai, close enough that a leased circuit from a Pune office reaches it in single-digit milliseconds, which is why so much local work is deliberately hybrid: an application tier in the region, a system of record that residency rules keep on your own premises, and a Direct Connect leg with a VPN standing behind it.
Three decisions then carry the rest of a design. Which account a workload belongs in, because the account is where quotas apply, billing lands and a mistake stops — and here that account often belongs to a customer, so the working skill is assuming a role into it, operating under service control policies written elsewhere and proving least privilege without ever seeing the management account. What routing and security groups sit around it, since subnets, route tables, NAT, interface endpoints and Transit Gateway attachments decide reachability, and hybrid routes are where reachability quietly stops behaving. And where the data physically rests, because KMS key policy, replication scope and region pinning are what an auditor actually asks about.
The rest composes on top: EC2 with launch templates and Auto Scaling, S3, EBS and EFS, RDS, Aurora and DynamoDB, Lambda with SQS, SNS and EventBridge, containers on ECS, Fargate and EKS, and CloudWatch, CloudTrail and Config as the record of what happened. Teams that operate AWS well express all of it in CloudFormation or Terraform and tag it so every rupee of the bill lands on a team that can explain it.
Why this skill matters now
Two forces pull AWS demand in Pune in different directions at the same time. The regulated captives — banking, insurance, payments and their shared-services arms around Kharadi, Yerwada and Magarpatta — are long past deciding whether to use the cloud and deep into proving where data rests and who could have reached it. That is architecture and evidence work: region pinning enforced by policy rather than by convention, private connectivity back to systems nobody is allowed to retire, encryption whose key policy names a specific principal, and an audit trail that holds up when someone asks about a Tuesday six months ago.
The product and SaaS benches in Baner, Balewadi, Viman Nagar and Kalyani Nagar ask a different question. Their estate is already on AWS and the pressure is unit economics — Savings Plans against Spot for build fleets, Graviton, S3 lifecycle transitions, cross-zone transfer nobody budgeted for, and cost attributed per tenant rather than per account. Spend is reviewed here alongside latency, by engineers rather than by finance.
Underneath both sits a condition specific to a services city: a large share of Pune engineers operate inside somebody else's AWS Organizations. Local interviews reflect it. Explaining permission boundaries, external IDs and why a call was denied when the identity policy plainly allows it is worth more in this market than reciting instance families.