A practical guide to moving from on-prem servers or a basic VPS to AWS, GCP, or Azure — the migration approaches, cost and downtime planning, and how to do a zero-downtime cutover.
Two situations push Indian businesses to the cloud. The first: a six-year-old server humming in the office that goes down every time the power flickers. The second: a bare VPS from a budget host with no backups, no monitoring, and root SSH still on a password. Both leak data, both break unpredictably, and both cost more in downtime than a properly architected cloud setup. This guide covers how to migrate to the cloud without the horror stories.
The migration approaches (the "6 Rs", simplified)
Rehost (lift and shift) Move the application to cloud infrastructure with minimal changes. Fastest and lowest-risk, but you don't yet capture cloud-native benefits. A sensible first step for many.
Replatform Make small changes to use managed cloud services — for example, moving your database to a managed offering. A good balance of effort and payoff.
Refactor Redesign the application to be cloud-native (containers, autoscaling, managed services). The most work, but the biggest long-term reliability and cost gains.
Replace Retire the legacy app entirely and adopt a SaaS or newly built alternative. Sometimes the smartest move if the old system is beyond saving.
Planning that prevents disasters
- Assess dependencies thoroughly — map what talks to what before you move anything. Surprises here cause outages.
- Cost the total picture — not just hosting, but data transfer, managed services, and the cost of *not* migrating (downtime, lost data). Cloud can cost more if left unoptimized, so right-size from the start.
- Plan the cutover for zero downtime — migrate to staging, test end-to-end, then do the production switch off-hours with a documented rollback path. Never cut over live and hope.
- Build in security and monitoring from day one — backups, alerts, and least-privilege access, not as an afterthought.
- Get infrastructure-as-code — so your setup is repeatable and you actually own it, rather than a hand-configured server nobody can reproduce.
How we do it
Our cloud migration work is built around exactly this: assessment first, then target architecture, a staging migration, and a zero-downtime production cutover — with Terraform/CloudFormation and monitoring handed over so your team owns the infrastructure. Scoped at discovery, no 2 a.m. surprises. Once you're on the cloud, keeping it secure is the next priority.
Frequently asked questions
AWS, GCP, or Azure — which should I choose? It depends on your stack, team skills, and existing tools. All three are excellent; the right choice is the one your team can operate well. We help you decide as part of assessment.
Will migration cause downtime? It shouldn't. A proper migration uses staging and an off-hours cutover with a rollback plan, keeping downtime to minutes or none.
Is the cloud more expensive than on-prem? It can be if left unoptimized, but right-sized and monitored, it's usually cheaper once you account for reliability, security, and the hidden costs of running your own hardware.
Still on an office server or a bare VPS? Explore our cloud migration services or talk to us about a zero-downtime move.
