By Swetha Ravi
Why Your Cloud Database Is Costing You 3× More Than It Should
Most UK businesses are massively overpaying for cloud databases. Here's why it happens, what it costs, and how a single review can cut your bill significantly.
Cloud databases were supposed to be cheaper than running your own servers. For many UK businesses, they've quietly become one of the largest
line items on the monthly AWS or Azure bill — and nobody quite knows why.
Here's the pattern we see repeatedly.
How it starts
You provision a database instance. You pick a size that feels safe — maybe one size up from what you think you need, because downtime is scary.
You move fast, you ship, you forget about the database config. Two years later, you're paying £800–£2,000 a month for infrastructure that was
set up in a sprint and never revisited.
The four most common causes of cloud database overspend
Over-provisioned instances. The instance you provisioned in 2022 was sized for traffic you hoped to have. You've grown — but not as much as you
feared. The database is running at 12% average CPU. You're paying for the other 88%.
Idle read replicas. Read replicas were added for a performance push. The push ended. The replicas stayed. They're billed at the same rate as
your primary instance.
Uncompressed backups and snapshot accumulation. Automated backups are good. Keeping 90 days of daily snapshots for a 500GB database when your
recovery requirement is 7 days is not good. That's 83 days of storage you're paying for unnecessarily.
Missing indexes on high-frequency queries. Slow queries force the database to do more work, which drives up compute costs and — in serverless
databases billed per query unit — directly increases your bill. One missing index on the right table can cost hundreds of pounds a month.
What a database assessment actually finds
A structured review of your database environment typically uncovers two or three of the above in every engagement. The findings come back as a
plain-English report — no jargon, no 40-page PDF — with specific, prioritised actions and projected savings.
Most clients see a 30–60% reduction in database costs after acting on the findings.
The broader picture
Database costs are just the most visible part. Slow queries affect your application's performance, which affects user experience, conversion
rates, and ultimately revenue. A database that's set up for how your business runs today — not how it was configured three years ago — pays for
itself quickly.
If you're spending more than £300/month on cloud databases and haven't had a structured review in the last 12 months, it's worth a
conversation.