You’ve got a 47-page cloud migration proposal sitting on your desk. It’s got architectural diagrams that look like circuit boards, a timeline that seems optimistic, and a cost estimate that made your CFO raise an eyebrow. Now what?

Most businesses struggle with this evaluation because cloud migration proposals blend technical complexity with significant financial commitment. You need to understand both, even if you’re not a solutions architect. Here’s how to separate the solid plans from the expensive disasters.

The Architecture Story Should Make Sense

A good proposal tells you why they’re recommending specific services, not just what those services are. If you’re seeing “we’ll move your database to AWS RDS” without any explanation of why RDS versus Aurora versus staying on-premises with a different approach, that’s a red flag.

Look for evidence that they understand your current environment. The proposal should reference specific applications, dependencies, and technical constraints from your existing setup. Generic statements like “we’ll migrate your infrastructure to the cloud” mean they haven’t done the discovery work.

The migration strategy should be explicit. Are they doing a lift-and-shift, or are they re-architecting? Both approaches have merit depending on your situation, but mixing them without clear reasoning suggests sloppy planning. A good proposal will explain why specific workloads are being handled specific ways.

The Timeline Reality Check

Cloud migrations take longer than vendors initially estimate. That’s just how it is. But some timelines are more realistic than others.

If the proposal suggests migrating your entire infrastructure in under three months without a clear explanation of how, be suspicious. Complex migrations typically take 12-18 months for mid-sized businesses when done properly. Rushed migrations create technical debt and operational problems that cost more to fix than the migration itself.

Look for parallel workstreams in the timeline. A solid plan will migrate non-critical systems first to validate the approach, then move to production workloads. If everything’s scheduled to happen in sequence, you’re looking at a longer project than the proposal suggests.

The Money Part

Cloud cost estimation is notoriously difficult, and proposals that give you exact monthly costs are probably wrong. What you want to see is a range, with explanations of the variables.

A reputable proposal will include optimization recommendations and explain when to use reserved instances, savings plans, or spot instances. If it’s all on-demand pricing, you’re being set up to overspend.

Watch for hidden costs. Data egress fees, support plans, third-party tools, and training often don’t make it into the headline number. When working with business AI solutions providers or cloud consultants, the good ones will explicitly call out these line items.

The proposal should also address ongoing operational costs. Moving to the cloud doesn’t eliminate your infrastructure team; it changes what they do. If there’s no discussion of who’s managing the cloud environment post-migration, that’s a gap.

Risk Management Tells You Everything

This is where you separate the professionals from the sales teams. A good proposal acknowledges what could go wrong and explains how they’ll handle it.

Look for specific mitigation strategies for data loss, downtime during migration, and rollback procedures. If the proposal assumes everything will work perfectly, you’re dealing with people who haven’t migrated many systems.

Compliance and security should be addressed in detail. If your industry has regulatory requirements, the proposal should explain how the cloud architecture maintains compliance. Generic statements about “meeting all security standards” aren’t enough.

The Testing and Validation Plan

Here’s something most weak proposals skip entirely: how do you know the migration worked?

A solid plan includes specific testing criteria for each workload, performance benchmarks, and success metrics. You should see plans for parallel running environments, data validation, and user acceptance testing.

If the proposal jumps from “migrate the database” to “project complete” without explaining how you’ll verify everything works, that’s a problem.

Questions to Ask

Before signing anything, get clear answers to these:

• Who’s responsible if we need to rollback a migration?
• What’s the plan if we exceed the estimated cloud costs?
• How will we train our team to operate in the cloud?
• What happens to our data if we want to move to a different cloud provider later?
• Who’s on call when things break at 2 AM?

The quality of the answers matters more than the answers themselves. Vague reassurances mean they haven’t thought it through. Specific, detailed responses indicate experience.

The Vendor Relationship

Finally, consider the relationship you’re entering. Cloud migration isn’t a one-time project; it’s the beginning of a long-term operational model. The vendor proposing the migration might become your ongoing cloud management partner.

Do they understand your business, or just the technology? Have they worked with companies in your industry? Can they provide references you can actually call?

A cloud migration proposal is as much about the team executing it as the technical plan itself. The best architectural diagram in the world won’t save you if the people implementing it don’t know what they’re doing.

Read the proposal carefully, ask hard questions, and don’t let impressive diagrams distract you from the fundamentals. Your future infrastructure depends on getting this decision right.