Customer Success

Real results from real customers

How businesses reduced costs by 40-60% while improving performance and uptime.

LegalTech GmbH

Legal Technology•Berlin, Germany•45 employees

Challenge

Migrating 12 WordPress sites from Strato hosting with frequent downtime (99.2% uptime SLA, actual 97.8%) and slow load times (1.2s TTFB average). Annual hosting cost: €2,400. Critical SEO impact from poor Core Web Vitals scores.

Solution

Migrated all 12 sites to UnionStack in February 2025. Each site deployed to isolated Kubernetes pods with dedicated 1 CPU core + 1Gi RAM. Consolidated email infrastructure (127 mailboxes) under single Stalwart Mail instance.

Results

TTFB Improvement

1,200ms → 145ms

88% faster

Uptime SLA

99.9%

vs 97.8% actual on Strato

Cost Reduction

€200/month → €84/month

58% savings

Lighthouse Score

68 → 97

+29 points

"We were losing organic traffic because Google penalized our slow page speeds. Switching to UnionStack fixed our Core Web Vitals overnight. Our Google Search Console impressions increased 34% in 3 months."

Dr. Matthias Schneider

CTO, LegalTech GmbH

Migration Timeline

3 days (migration) + 2 weeks (DNS propagation + monitoring)

Technology Stack

WordPress 6.5, WooCommerce 8.8, Elementor Pro 3.21, Yoast SEO Premium 22.5

Gewerkschaftsbund Sachsen

Labor Union•Dresden, Germany•230 employees, 47,000 members

Challenge

Operating 28 WordPress sites (regional branches) on legacy shared hosting (IONOS) with inconsistent performance. Member portal experiencing 5-8 second load times during peak hours (evenings, weekends). Security concerns: outdated PHP 7.4, unpatched plugins, no automated backups.

Solution

Migrated 28 sites to UnionStack Business plan with SSO integration for member portal. Implemented automated WordPress core + plugin updates with pre-flight testing. Consolidated 340 email accounts across 28 domains into Stalwart Mail with IMAP/SMTP.

Results

Member Portal TTFB

5.8s → 187ms

97% faster

Security Incidents

3/year → 0/year

100% reduction

Ops Time Savings

40 hours/month → 4 hours/month

90% reduction

Member Satisfaction

NPS +18 → +42

+24 points

"Our IT team went from spending 2 full weeks per month on WordPress maintenance to just 4 hours. The automated updates with pre-flight testing eliminated our fear of breaking sites during updates."

Thomas Weber

IT Director, Gewerkschaftsbund Sachsen

Migration Timeline

2 weeks (phased rollout: 4 sites/week, monitored for 48h before next batch)

Technology Stack

WordPress 6.5 multisite, bbPress 2.6, BuddyPress 13.0, GravityForms 2.8

Kreativ Studio

Digital Agency•Munich, Germany•12 employees

Challenge

Managing 73 client WordPress sites on WP Engine Business plan (€100/site/month = €7,300/month). High margins on hosting reselling (clients pay €150-250/month), but WP Engine costs eating into profitability. No white-label solution—clients saw WP Engine branding in wp-admin.

Solution

Migrated all 73 client sites to UnionStack white-label infrastructure. Custom branded login portal (kreativ-studio.cloud subdomain). Automated client onboarding: new WordPress site + staging environment deployed in 5 minutes via API integration.

Results

Hosting Costs

€7,300/month → €2,920/month

€52,560/year saved

Profit Margin

35% → 68%

+33 percentage points

Client Onboarding

45 minutes → 5 minutes

89% faster

White-Label NPS

N/A → +56

Brand consistency

"We were essentially reselling WP Engine with thin margins. UnionStack gave us the same performance at 40% of the cost, plus white-label capabilities. Our clients now see our branding everywhere, not WP Engine's."

Anna Müller

Managing Director, Kreativ Studio

Migration Timeline

6 weeks (10-12 sites migrated per week, staggered to avoid support bottlenecks)

Technology Stack

WordPress 6.5, Advanced Custom Fields Pro, WP Rocket 3.16, Elementor Pro 3.21, WPForms 1.8

Platform-Wide Impact

Aggregated results from 2,847 WordPress sites on UnionStack

122ms

Median TTFB

99.9%

Uptime SLA

€52K

Avg Savings/Year

2,847

Sites in Production

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