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Case Study: SignalWire Dedicated Real-Time Region
Customer Story
Case Study: Enterprise CCaaS
Dedicated Real-Time Region BYOC / SIP EU Data Residency 99.99% Availability

Carrier-grade voice in Europe, delivered in months, not years

A global enterprise CX platform needed 99.99% uptime and in-jurisdiction data processing for regulated European customers. SignalWire's Dedicated Real-Time Region made it possible, without years of in-house engineering.

99.99%
Availability SLA achieved
3–7 yrs
Build time avoided
+59
Enterprise Customers Gained
~22 min
Max downtime per year
The Challenge

A voice platform gap that threatened enterprise growth

A leading enterprise customer experience platform had a problem: its European clients (major telecommunications carriers among them) demanded 99.99% availability, in-jurisdiction media processing, and strict GDPR compliance. Their existing shared EU cloud infrastructure could only promise 99.95%, and their previous provider offered no path to single-tenant isolation.

The product team initially believed they could build a FreeSWITCH-based telephony stack internally. SignalWire's engineering leadership quickly corrected that assumption: replicating a carrier-grade platform would take five to seven years, not months.

Without a solution, the company faced losing major enterprise contracts and ceding ground to established CCaaS competitors.

⚡
Shared cloud SLA ceiling
Prior shared EU infrastructure capped availability at 99.95% (over 4 hours of potential downtime per year). Not acceptable for tier-1 carriers.
🌍
Data residency mandates
Enterprise customers in Germany and Spain required voice signaling and media to stay within their national borders, a hard regulatory requirement.
🏗️
Build vs. buy dilemma
In-house development would have consumed 3–7 engineering years, delaying market entry and straining resources across core product work.
The Solution

A Dedicated Real-Time Region: Single-Tenant, In-Country

SignalWire deployed a Dedicated Real-Time Region (DRTR) in Europe, migrating voice traffic from the shared EU node into a purpose-built, single-tenant environment. A second region in Frankfurt was later added to meet strict in-country data residency mandates from Deutsche Telekom Germany.

1
Single-tenant isolation
All signaling and media processing moved inside the customer's own dedicated region, eliminating "noisy neighbor" interference and delivering consistent, predictable performance at high call volumes.
2
Bring-Your-Own-Carrier (BYOC) SIP integration
Enterprise clients retained their existing carriers via BYOC SIP trunks, removing porting costs and migration friction while gaining SignalWire's programmable call control.
3
Controlled change management
The dedicated infrastructure aligned release cycles and maintenance windows with the customer's own schedule, replacing ad-hoc updates that had previously broken call flows.
4
Second Frankfurt region for in-country residency
Added to satisfy Deutsche Telekom's explicit requirement that data never leave Germany, opening the door to one of Europe's largest carrier relationships.

The dedicated region architecture uses the same APIs as SignalWire's public cloud; customers migrate to single-tenant without rewriting their applications.

Results

Four-nines uptime. Enterprise contracts won. Years of build time saved.

✔
99.99% availability achieved: Moving from shared cloud (99.95%) to a dedicated region reduced allowable downtime from 4+ hours per year to roughly 22 minutes.
✔
European voice launched in months, not years. Leveraging SignalWire's infrastructure let the team go live years ahead of what any internal build would have allowed.
✔
Tier-1 carrier wins: Deutsche Telekom Germany and a major European carrier onboarded tens of thousands of agents onto the platform, attracted by the 99.99% SLA and GDPR compliance.
✔
Latency and packet loss reduced: Calls no longer traverse transatlantic paths; signaling and media stay within Europe, improving agent productivity and end-customer experience.
✔
Support escalations dropped: Proactive monitoring and a single point of contact replaced escalation cycles, freeing engineering teams for core product work.
✔
Scalable blueprint established: The DRTR reference architecture can now be sized and configured for new dedicated-region customers without reinventing the wheel.
Customer Revenue Growth (FY 2022 → FY 2026)
$492M
Full-year revenue FY 2022
→
$857M
Full-year revenue FY 2026
+59
Enterprise customers gained
Why SignalWire

Capabilities competitors couldn't match

Many cloud communications providers offer shared EU regions. Few can deliver genuine single-tenant isolation, in-country media processing, and 99.99% SLAs simultaneously, especially for regulated industries where data sovereignty is non-negotiable.

🔒
True single-tenant isolation
No shared infrastructure means no noisy-neighbor interference and no shared-fate incidents from other customers' traffic spikes.
🗺️
In-jurisdiction processing
Signaling and media never leave the defined geographic region, satisfying GDPR and country-specific data residency laws.
🔄
BYOC flexibility
Customers keep existing carrier relationships. No forced porting, no migration costs, no rewriting existing call flows.
🤖
AI-ready architecture
The dedicated-region design supports future AI voice agent workloads that also demand low latency and data residency compliance.