Cloud Costs in M&A: What to Do in the First 90 Days

Why cloud costs spike after an acquisition

In the first quarter after a deal closes, cloud spend typically jumps 15–30%. Not because the combined entity is using more compute — but because nobody is managing the combined cloud estate.

The acquiring company has its own AWS, Azure, or GCP accounts. The target has theirs. Both have discount instruments — reserved instances, savings plans, committed use discounts — purchased independently, sized for workloads that may no longer exist in their original form. The two billing environments don't talk to each other. And the team that understood the target's cloud setup? Half of them left at close.

The three problems that compound

1. Inherited commitments you didn't buy

The target may have 1-year or 3-year reserved instances purchased months before the deal. Those commitments are now yours. If the underlying workloads get migrated, consolidated, or decommissioned — and they will — those RIs sit unused, burning cash. A $10M cloud environment can easily have $500K–$1M in stranded commitments.

2. Duplicate services running in parallel

Both companies ran their own monitoring, logging, CI/CD, and data pipelines. After close, both stacks keep running. Nobody wants to be the one who turns off the acquisition's infrastructure before integration is done. So you pay for two of everything — often for 6–12 months longer than planned.

3. Billing chaos across accounts

The target may have used a different billing structure — consolidated billing through a reseller, a different support tier, separate billing accounts per business unit. Merging these into the acquirer's billing hierarchy takes time, and until it's done, you have no single view of total cloud spend. Finance is reconciling invoices manually.

The 90-day framework

Day 1–30: Assess the full picture

Before you can act, you need to see. The first priority is getting an objective read on the combined cloud estate:

• Collect invoices and pricing agreements from both entities, across all clouds
• Inventory all active discount instruments — RIs, savings plans, EDPs, CUDs
• Identify what expires in the next 6 months and what's already underutilized
• Map spend to business units so you can see what belongs to what

This is where a free savings assessmentpays for itself immediately. Cloudsaver can analyze both entities' invoices in 2–3 business days and give you a combined view of discount coverage, expiring commitments, and savings opportunities — before you make any infrastructure decisions.

Day 30–60: Consolidate visibility

With the assessment in hand, the next step is establishing a single source of truth:

• Decide on the billing hierarchy — which entity becomes the payer account
• Consolidate cloud accounts under unified management
• Implement consistent tagging so spend can be attributed to business units, products, or cost centers
• Set up anomaly detection so you catch cost spikes before they hit the monthly invoice

The goal isn't perfection in 30 days. It's getting to a state where the CFO can see one number for total cloud spend and trust it.

Day 60–90: Act on savings

Now you have visibility and you know where the money is. This is when you:

• Let stranded commitments expire rather than auto-renewing them
• Right-size discount instruments to match the combined workload, not the pre-acquisition workload
• Decommission duplicate services that integration has made redundant
• Move to 30-day discount instruments where possible — they eliminate the risk of over-committing while the infrastructure is still in flux

For a $20M combined cloud estate, this 90-day process typically identifies $2M–$5M in annualized savings. Most of that comes from discount coverage improvements alone — not from cutting services or reducing capacity.

Why PE firms are building this into the playbook

Private equity firms that do multiple acquisitions per year are starting to treat cloud cost assessment as a standard part of the first-100-days plan — alongside IT rationalization and vendor consolidation. The ROI is too high and the effort is too low to skip.

A cloud financial management company handles the analysis, the instrument management, and the ongoing optimization — so the internal team can focus on integration instead of cloud billing.

Start with Day 1

If you've recently closed a deal — or you're about to — the savings assessment is the fastest way to understand what the combined cloud estate actually looks like. It's free, it takes 2–3 business days, and it gives you the numbers you need to build the cost reduction plan.

The free savings assessment shows you exactly where the gap is — against your actual invoices, in 2–3 business days, with no connectivity required.