Cloud Migration
Renvric plans and carries out cloud migrations that start with an honest inventory: what you run, what depends on what, what can move as it is, and what should change on the way. The aim is a controlled cut-over with a tested way back.
Start your project
Begin with the inventory
Most migration overruns trace back to something nobody knew about: a scheduled job on a forgotten server, a hard-coded IP address, a licence tied to hardware. Discovery tools help, but they are complemented by interviews with the people who operate the systems.
The output is a register of workloads with owners, dependencies, data volumes, licensing, performance profile and business criticality.
The migration paths
Rehost
Move as is to virtual machines. Quickest, preserves existing behaviour and existing inefficiencies.
Replatform
Make targeted changes, such as moving to a managed database, to reduce operations without rewriting.
Refactor
Change the application to use cloud services directly. Highest effort, greatest long-term benefit where it is justified.
Replace
Retire the system in favour of a packaged or SaaS product.
Retire or retain
Switch off what nobody uses, and keep on premises what has a good reason to stay.
Planning in waves
Workloads move in groups chosen to limit risk: low-criticality systems first to prove the landing zone, then tightly coupled systems together. Each wave has entry criteria, a rehearsal in a non-production copy, a cut-over plan with timings, and a rollback decision point.
- Landing zone with accounts, network, identity and guardrails built before anything moves.
- Data transfer approach selected by volume and tolerance for downtime: online replication, offline seed or scheduled batch.
- Cut-over runbooks written as numbered, assignable steps.
- Hypercare period after each wave, with named people on call.
Share the outcome you need and Renvric will recommend the smallest useful next step.
What a buyer should challenge
- Business case figures that compare cloud costs with only the visible on-premises costs.
- Plans without a performance baseline, since nobody can prove it is no slower afterwards.
- A single big-bang weekend for a complex estate.
- No plan for licence changes, backup tooling or monitoring that moves with the workload.
Risks and controls
Typical hazards are data transfer taking longer than the downtime window, latency between a migrated application and a database left behind, and cost climbing because instances were sized to match old hardware. Renvric manages these with early transfer tests, dependency mapping to move chatty components together, and right-sizing reviews after a settling period.
Triage example
A manufacturer with a data centre lease ending might have thirty applications of very different value. The register could show that ten can be retired, fifteen rehosted and five need attention first. That triage, done before any contract is priced in detail, tends to be the most valuable week of the project.
Related areas to explore: Google Cloud, Cloud transformation and Cloud Consulting.
Common questions
What is included in cloud migration?
Discovery and dependency mapping, target design, landing zone setup, migration waves with rehearsals, cut-over and rollback plans, validation, and a handover covering operations and cost monitoring. Application changes are included where the chosen path requires them. Post-move optimisation is scoped as a distinct item.
Who is it suitable for?
Organisations leaving a data centre, ageing hardware or an end-of-life platform, or those needing capacity and resilience they cannot easily build themselves. It is worth questioning where workloads are stable, cheap to run and tied to specialist hardware. Regulated or latency-sensitive systems need extra scrutiny.
How long does delivery take?
It depends on the number of workloads, their coupling, data volumes and your tolerance for downtime. Assessment comes first, and a wave-based schedule follows from it. Renvric does not offer a timeline before that inventory exists. Rehearsals often reveal timing issues sooner than planning does.
What affects cost?
Number and complexity of workloads, chosen migration paths, data volume, downtime tolerance, licensing, parallel running of old and new environments, and the post-migration optimisation effort. Cloud running costs should be modelled separately from the migration project cost. Idle parallel environments are a cost to schedule out.
How does Renvric control quality and risk?
Through a baseline of performance before moving, rehearsed cut-overs, defined rollback points, validation tests agreed with application owners, and a hypercare period. Each wave closes with a written review before the next begins. Each wave closes with a lessons-learned review.
More services to explore
A paid assessment, with a defined output, is usually the sensible first step. It gives you a migration plan and cost range you can take to your board whether or not you proceed with Renvric.