Comparison Guide
Aerie vs Kaseya
Choose a platform that prioritises security and transparency. Not lock-in and upsells.
2021 REvil ransomware attack affected 1500+ customers — trust damage persists
£18,000+/month for 50-client MSP with separate IT Glue and PSA fees
Bolt-together acquisitions create 5+ separate UIs instead of unified platform
3-year contracts with aggressive price increases (20–30%) at renewal
Why MSPs Are Switching from Kaseya
Kaseya
2021 REvil ransomware attack affected 1500+ customers — trust damage persists
£18,000+/month for 50-client MSP with separate IT Glue and PSA fees
Bolt-together acquisitions create 5+ separate UIs instead of unified platform
3-year contracts with aggressive price increases (20–30%) at renewal
Aerie OS
Security-first architecture — zero-knowledge vault, mTLS, no breach history
£8,000–12,000/month savings vs Kaseya for equivalent MSP size
Built from first principles as one cohesive platform with single login
Month-to-month transparent pricing with no lock-in or auto-renewal
Kaseya vs Aerie OS: Feature Comparison
| Feature | Kaseya | Aerie OS |
|---|---|---|
| Security Track Record | 2021 REvil incident + multiple CVEs | No incidents, security-first design |
| Platform Architecture | 5 acquired products, multiple UIs | Single unified platform, one login |
| Documentation & Credentials | IT Glue (£2,000+/month) | Wiki + Scribe + Vault included |
| Cost for 50-Client MSP | £18,000+/month (with add-ons) | £10,000/month all-inclusive |
| Contract Terms | 3-year lock-in with auto-renewal | Month-to-month, cancel anytime |
| Setup Time | 3–6 weeks | Day 1 operational |
The Verdict: Kaseya or Aerie OS?
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Kaseya vs Aerie OS: FAQ
How does the 2021 REvil incident affect Kaseya customers now?
Kaseya customers still face trust questions from prospects and enterprise buyers. UK public sector and regulated clients often exclude vendors with major breach histories. Aerie has no security incidents and is UK-built from the ground up.
Can you show me the real cost difference?
A 50-client MSP using Kaseya VSA (500 endpoints) + IT Glue + PSA pays roughly £18,000/month. The same MSP on Aerie (20 techs) pays £10,000/month — with all modules included, no add-ons, no endpoint limits.
Does Aerie replace IT Glue?
Yes. Aerie includes Wiki (knowledge base), Scribe (auto-documentation), and Vault (zero-knowledge credential manager). All in one platform, no separate subscriptions.
Is Aerie as configurable as Kaseya's bolt-together approach?
Aerie is simpler because it's unified — PSA, RMM, CRM, documentation, and security all use the same data model. No integration glue needed. Most MSPs are fully operational on day one.
What if I'm locked in to a Kaseya multi-year contract?
We offer migration credits to offset your overlap period. Our Migration Wizard imports tickets, contacts, and assets from Kaseya/Autotask via API. No data left behind.
Does Aerie charge per-endpoint like Kaseya VSA?
No. Aerie uses per-technician pricing with unlimited endpoints. No per-device surcharges, no surprise billing. One price covers PSA, RMM, CRM, security, documentation, compliance — everything.
Are there annual lock-in penalties if I leave?
No. Aerie offers month-to-month billing with no penalties. If you choose annual billing (15% discount), you can still cancel with 30 days' notice.