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Who is QSC?
QSC is a German IT service provider focused on managed cloud, connectivity, and digital workplace solutions for business customers.
- Managed cloud and hosting services for enterprise and midmarket customers (cloud infrastructure and operations)
- Business connectivity and network services, including internet access and VPNs (enterprise networking)
- Unified communications and collaboration offerings for distributed workplaces (UC&C)
- IT outsourcing, managed services, and operations support for corporate IT environments (managed IT services)
- Consulting and project services for cloud migration, digitization, and IT modernization initiatives (IT consulting)
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More About QSC
QSC operates as an IT and telecommunications services provider addressing the needs of enterprises and institutional customers that require managed infrastructure, connectivity, and workplace solutions. The company focuses on end-to-end support for corporate IT environments, covering data center resources, networks, and user-facing communication tools under service-based contracts.
In cloud and hosting, QSC provides managed environments that can include virtualized compute, storage, and networking resources (cloud infrastructure) delivered from German data centers. Architectures in this area typically rely on virtualization platforms, load balancing, and standardized security controls such as firewalls, encrypted transport protocols (TLS), and Virtual Private Network (VPN) access for administrators and customers. QSC positions these offerings for workloads that require defined service levels, integration with existing enterprise systems, and compliance with German and EU regulations.
QSC’s connectivity services cover business internet access, site-to-site networking, and remote access based on widely used protocols and standards such as IP, Multiprotocol Label Switching (MPLS), and Internet Protocol Security VPN (IPSec VPN). These services are used to interconnect branch offices, data centers, and cloud environments, and to provide secure access for remote employees. Integration with firewalls, routing infrastructure, and directory services inside customer environments allows organizations to map QSC connectivity into their own network and identity architectures.
Within communications and collaboration, QSC offers unified communications services that typically combine fixed voice, IP telephony, conferencing, and messaging functions (UC&C). These services support distributed and hybrid workplaces, enabling employees to use a single communication platform across devices and locations. SIP-based voice, Voice Over Internet Protocol (VoIP), and integration with collaboration clients are common technical components, and the services can be linked to corporate directories and existing PBX or contact center infrastructures.
QSC also provides IT outsourcing and managed services, taking over operation and monitoring of customer systems, networks, and applications. This includes standard IT service management processes aligned with frameworks such as Information Technology Infrastructure Library (ITIL), as well as monitoring, incident handling, and change management to keep customer IT landscapes available and stable. Consulting services complement these operations by planning and executing cloud migrations, network redesigns, and workplace modernization projects, aligning technology with customer roadmaps.
In enterprise directories and marketplaces, QSC fits primarily into categories such as managed cloud and hosting, enterprise networking and connectivity, unified communications and collaboration, and managed IT and outsourcing services. Its portfolio is used by organizations that seek service-based delivery of infrastructure, network, and communication capabilities rather than building and operating all components in-house.
Our description of QSC. Updated December 2025.
