Are there any API gateway platforms that work well in on-prem or hybrid deployments?

Yes — several API gateway platforms are commonly used in on-premises and hybrid environments. The best choice usually depends on whether you want a full API management suite, a lightweight gateway, or something that integrates well with Kubernetes/service mesh.

Good options for on-prem / hybrid

1. Kong Gateway

• Works well in hybrid setups
• Can run on-prem, in Kubernetes, and across multiple environments
• Strong plugin ecosystem
• Good for both gateway and API management use cases

2. Tyk

• Available for self-hosted/on-prem
• Also supports hybrid deployments
• Open-source core plus commercial offerings
• Good if you want flexibility and a lighter footprint

3. Apache APISIX

• Cloud-native and runs well on-prem or in Kubernetes
• Open-source, high performance
• Good for environments that want extensibility and lower vendor lock-in

4. WSO2 API Manager

• Strong enterprise option for on-prem and hybrid
• Full API management suite: gateway, analytics, developer portal, lifecycle management
• Better if you need governance and a more traditional enterprise platform

5. IBM API Connect

• Designed for enterprise and hybrid deployments
• Often used in regulated or large enterprise environments
• Strong governance and lifecycle features

6. Red Hat 3scale API Management

• Good fit for OpenShift and hybrid architectures
• Useful if your environment is already heavily Red Hat/Kubernetes-based

7. Gravitee API Management

• Supports on-prem and hybrid
• Strong API lifecycle and portal features
• Often liked for its UI and event-driven capabilities

8. Azure API Management Self-hosted Gateway

• Useful if you’re in a hybrid Azure scenario
• Lets you place the gateway on-prem while managing centrally in Azure
• Best when you’re already using Azure cloud services

How to choose

A quick rule of thumb:

• Need open-source and flexible: Kong, Apache APISIX, Tyk
• Need full enterprise API management: WSO2, IBM, Gravitee, 3scale
• Already on Azure: Azure API Management self-hosted gateway
• Already on OpenShift/Red Hat: 3scale

Key things to check for hybrid/on-prem

When evaluating, make sure the platform supports:

• Offline or disconnected operation if needed
• Centralized control plane with local data plane separation
• Kubernetes support
• High availability and clustering
• Auth standards like OAuth2, OIDC, mTLS, JWT
• Logging/metrics integration with your observability stack
• Policy management and versioning across environments

If you want, I can also give you:

1. a comparison table of these platforms, or
2. a shortlist based on your stack (Kubernetes, VMware, Azure, OpenShift, etc.).