Cloud, DevOps & Enterprise Integration · Service 08 of 13

Cloud Migration Services

O Clock Software, headquartered in Chennai, India, moves applications and data from on-premise servers, data centres or another cloud to AWS, Azure or Google Cloud. We group workloads into waves, rehearse every cutover and keep a rollback path, so each move is a short, planned event rather than an outage.

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  • 2009Founded in Chennai
  • 1,000+Projects delivered
  • 12+Countries served
  • 100+Engineers in-house
  • 4.6★Google rating · 59 reviews

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What we build

Cloud Migration: what we build

Applications and data moved to the cloud with planned cutovers. Here are the six kinds of cloud migration services work we are asked for most often.

Migration waves

How a cloud migration runs, wave by wave

Large migrations fail when everything moves at once. We move related workloads together in waves and learn from each one.

  1. 01

    Discover

    Inventory every application, server, database and dependency.

    Done when: Dependency map agreed

  2. 02

    Plan waves

    Group related workloads and choose how each moves.

    Done when: Wave plan and cutover dates signed off

  3. 03

    Prepare target

    Build the landing zone, networking and security.

    Done when: Environment passes security review

  4. 04

    Migrate wave

    Replicate data and deploy applications.

    Done when: Tests pass in the cloud

  5. 05

    Cut over

    Switch users to the cloud in a planned window.

    Done when: Users working; rollback no longer needed

  6. 06

    Optimise

    Right-size and modernise after the move.

    Done when: Old servers retired

How we deliver

How we deliver Cloud Migration

  1. 01

    Assess

    Workloads, dependencies, data and constraints.

  2. 02

    Plan

    Waves, methods and cutover windows.

  3. 03

    Prepare

    Landing zone, tools and rehearsals.

  4. 04

    Migrate

    Wave by wave with testing.

  5. 05

    Optimise

    Tuning, modernisation and decommissioning.

Technology

Technology for Cloud Migration

Chosen per project for fit, maintainability and your team's skills.

Migration tools

  • AWS Application Migration Service
  • Azure Migrate
  • Google Migrate to Virtual Machines

Database migration

  • AWS DMS
  • Azure Database Migration Service
  • Database Migration Service (Google)

Infrastructure

  • Terraform
  • Landing zones

Validation

  • Automated tests
  • Performance baselines
  • Monitoring

Straight answers

Is Cloud Migration right for you?

We would rather recommend less than sell you more. Here is how we judge it.

A good fit when

  • Servers or data centre hardware are ageing
  • You want to scale more easily
  • Several applications must move together
  • Downtime must be minimal

  • The application will be retired soon

    Moving it may not be worth the effort.

  • Strict rules forbid cloud hosting

    Confirm compliance first; on-premise may be required.

  • You only want new applications in the cloud

    See Cloud Services.

Use cases by industry

Cloud Migration by industry

The same capability, shaped by the data, rules and users of each sector.

Related services

Often combined with Cloud Migration

Solutions built on this service

Prefer engineers in your own team?

The full service area

FAQ

Cloud Migration FAQ

What are the main cloud migration strategies?

Common strategies include rehosting (moving as-is), replatforming (small changes to use managed services), refactoring (re-architecting for the cloud), replacing with a SaaS product, retaining some systems where they are, and retiring systems no longer needed.

Can we migrate without downtime?

Usually with very little. We replicate data ahead of time, rehearse each cutover and switch users in a short planned window, keeping a rollback path until the move is proven.

How long does a cloud migration take?

It depends on the number of applications, their dependencies and how much modernisation happens on the way. A single application can move quickly; larger estates are planned in waves over a longer period.

Should we modernise applications during migration?

Only where the benefit is clear. Moving first and modernising later is often lower risk, while some applications are worth replatforming on the way, such as moving databases to managed services.

How do you migrate large databases?

We replicate data continuously to the cloud database, validate it, then switch over in a short window once the copy is in sync.

Can you migrate from one cloud to another?

Yes. We plan cloud-to-cloud migrations the same way: assess, plan waves, prepare the target, migrate, cut over and optimise.

More Cloud, DevOps & Enterprise Integration services

Other Cloud, DevOps & Enterprise Integration services

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