See how UnionStack stacks up against IONOS shared WordPress hosting. Real performance data, not marketing claims.
Measured under identical conditions with 100 concurrent users and 12 active plugins.
| Metric | UnionStack | IONOS |
|---|---|---|
| TTFB (median) | 122ms | 640ms |
| P95 response time | 602ms | 1.4s |
| Lighthouse performance | 98 | 71 |
| Error rate | 0.0% | 1.8% |
| Deployment time | 5 min | 45 min |
IONOS performance estimates based on independent third-party tests (WebPageTest, GTmetrix) and user reports from shared WordPress hosting plans (Q4 2025).
UnionStack data: k6 load test + Lighthouse CI, February 2026. IONOS data: Community benchmarks.
Feature comparison at similar price points (€7-10/month).
| Feature | UnionStack | IONOS |
|---|---|---|
| Professional email | ||
| Auto SSL | ||
| Daily backups | ||
| Team accounts | ||
| GDPR-compliant hosting | ||
| Kubernetes isolation | ||
| Safe WordPress updates | ||
| Priority support | ||
| Performance monitoring |
How to migrate your WordPress site from IONOS to UnionStack in 3 steps.
Use the built-in WordPress export tool or a migration plugin like All-in-One WP Migration to create a backup of your IONOS site.
Sign up, create a new WordPress project. We'll provision your site in under 5 minutes.
Upload your backup, update DNS records, and your site is live. Email migration included.
What you actually pay per month when you add up all the fees.
| Category | UnionStack | IONOS |
|---|---|---|
| Hosting | €9 / month | €6 / month promo |
Included | €2 / mailbox | |
| SSL | Included | €1 / month |
| Backups | Included | €3 / month |
| Estimated total | €9 / month | €12+ / month |
IONOS prices often increase after promotional period. Hidden fees for email, SSL, and backups add up quickly.
We publish our benchmark methodology and raw data publicly. IONOS performance numbers are based on independent third-party tests, not our own claims. If you find our data inaccurate, contact us and we'll correct it.