Red Hat Service Interconnect

Connects applications and microservices together across Clouds, Kubernetes Clusters, or standalone VMs.

​​Interconnect applications and microservices across the open hybrid cloud

Based on the open source Skupper project, Red Hat Service Interconnect simplifies application connectivity across the hybrid cloud. Unlike traditional means of interconnectivity (such as VPNs combined with complex firewall rules), development teams can easily create interconnections without elevated privileges and deliver protected links without compromising the organization's security or data.

Applications and services across your environments can communicate with each other using Red Hat Service Interconnect as if they were all running in the same site. This connectivity can be maintained even as applications are migrated between environments.

Use cases

Connect services
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Connect services across the hybrid cloud

Make any service from any cloud available securely on any other cloud. Service Interconnect routers and gateways provide trusted communication links between services on different clouds, edge devices, generic Kubernetes and OpenShift.

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Integrate legacy
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Integrate legacy applications on-premise with OpenShift clusters in the cloud

Service Interconnect allows legacy or “never-migrate” applications to continue running independently in their original environments while new web-tier applications are deployed in the cloud. To the cloud-native apps running in the cloud, these “legacy” apps appear to be cloud-native apps as well.

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Progressive Kubernetes-to-OpenShift migration

Service Interconnect lets you migrate progressively, one service at a time, reducing effort and risk when migrating between major versions of OpenShift or from any CNCF certified Kubernetes to OpenShift. Services are moved from the source to the target OpenShift cluster one by one. The services themselves behave as if they are still on the same cluster until the migration is complete.

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Federated machine
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Federated machine learning

The ephemeral nature of the networks created by Service Interconnect enables federated learning from multiple different data sources without actually copying or giving up control of the data itself. It provides a decentralized and privacy-preserving approach to machine learning, allowing for efficient model training in dynamic and intermittently connected environments.

Remote GPUs
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Provide secure access for on-prem services to access remote GPUs

Skupper unlocks a seamless and secure way for on-premises services to harness the power of remote GPUs. Elevate your performance with confidence, ensuring a frictionless connection between your local infrastructure and high-performance computing resources with Red Hat Service Interconnect.

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Database replication across clouds

When relying on multiple cloud providers for redundancy, maintaining database consistency across clouds is crucial for replicating environments seamlessly. With Service Interconnect, databases can use their native replication features across a protected channel, without compromising the services of one cloud to those of another.

RHEL machine
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Progressive private datacenter (bare metal/VM/RHEL) to OpenShift Migration

When services or applications are located on Red Hat Enterprise Linux (RHEL), Service Interconnect installs as a systemd service, a RHEL Service Gateway, or Podman containers on the same RHEL machine or even on an adjacent RHEL machine on the same network segment, allowing services to be migrated progressively to OpenShift.

Service Interconnect capabilities


Streamlined and trusted cloud connectivity

Red Hat Service Interconnect enables  seamless multicloud, hybrid cloud, and edge connectivity so you can easily connect your applications and services. Access private cloud services from the public cloud without the need for VPNs while ensuring your data stays protected. Service Interconnect also lets you add and remove new clusters on the fly, giving you greater flexibility and control.


Comprehensive security

Service Interconnect is equipped with built-in security that scales across clusters and clouds by default. The connections between Service Interconnect routers are secured with mutual TLS using a private, dedicated certificate authority (CA). Each router is uniquely identified by its own certificate. This means that the Service Interconnect network is isolated from external access, preventing security risks such as lateral attacks, malware infestations, and data exfiltration.


Simplified networking

With Red Hat Service Interconnect, you won't need to make any changes to your existing application or have administrator privileges. Our solution provides transparent communication through HTTP/1.1, HTTP/2, gRPC, and TCP, enabling seamless integration into your current system.


Smart routing

Simplify service connectivity through Layer 7 addressing and routing. Service Interconnect’s redundant routing feature ensures high availability even during network failures. Dynamic load balancing allows for better traffic management and improved performance. Service Interconnect provides efficient and optimized routing with cost- and locality-aware traffic forwarding.


Application layer abstraction

Interconnections created are agnostic of the environment and IP version (such as IPv4 and IPv6); they enable portability for both applications and their associated networking. This lets you migrate applications easily without recreating the networking.


Simple command-line interface

Service Interconnect provides a simple command-line interface that development teams can use without elevated privileges to establish trusted connections across environments.



Skupper is a Layer 7 service interconnect that enables secure communication across Kubernetes clusters with no VPNs or special firewall rules. With Skupper, your application can span multiple cloud providers, data centers, and regions. The Skupper project is completely open source and licensed under the Apache License version 2.0.