Apache APISIX vs Traefik

The APISIX openid-connect plugin is the component to evaluate first if your gateway must validate user or service identities against an external identity provider. The plugin is documented to work with Keycloak, Auth0, Microsoft Entra ID, Google and Okta, and to support the authorization code, client credentials, token introspection and PKCE flows. Those four flows cover browser-based user login, machine-to-machine access, opaque token validation and public clients such as single-page apps. Map each of your applications to one of these flows before you compare gateways, because the flow determines which token settings, redirect URIs and client registrations you must create in the provider.

Traefik's identity options are a different question. Its documentation and README describe routing, TLS, middleware and metrics, but the supplied material does not confirm a bundled OpenID Connect flow matching the APISIX plugin's list of providers and grants. Treat Traefik's authentication support as unconfirmed for your case until you check the middleware reference and its commercial documentation for the exact provider and flow you need. If the answer depends on a separate product such as Traefik Hub or Traefik Enterprise, record that dependency in the design, since it changes licensing and support.

Test both gateways against a real identity provider in a lab before committing. Stand up the provider you actually use, register a test client for each flow, and confirm token issuance, token introspection, refresh behavior and logout from a browser and from a service account. Record the exact claims your applications need and check that each gateway forwards them. Ask the provider's administrators to confirm the redirect URI, token lifetime and PKCE settings they will enforce. Keep the lab results with your design record, since they show which flows were verified rather than assumed.

The largest infrastructure difference starts with where configuration lives. A traditional or decoupled Apache APISIX deployment depends on an etcd cluster, so you pay for etcd nodes, their storage and backups, and the people who monitor and restore them. Standalone mode removes etcd by loading conf/apisix.yaml or conf/apisix.json and hot-reloading changes, which lowers infrastructure cost but moves change control into files that someone must version, review and promote. Traefik has no separate configuration database in its documented setup. It reads orchestrator sources such as Kubernetes CRDs, Ingress or Gateway API objects, Docker labels or file configuration, and it ships as a single Go binary or an official Docker image. Its infrastructure cost is therefore mostly proxy replicas plus the platform it watches. Ask your platform team to price the etcd cluster separately in any APISIX design.

Staff cost follows the skills each project demands. APISIX runs on NGINX and LuaJIT, and Lua plugins execute inside worker processes, so operators who debug plugin behavior need that stack. Teams that write plugins in Java, Go or Python also run external plugin runners, which adds build and patch work. Traefik is written in Go and is driven mostly by orchestrator objects, which usually suits platform teams already fluent in Kubernetes manifests. Upgrade effort is the recurring cost that most often surprises buyers. Traefik's documented policy is three or four minor versions a year, each supported until the next release, so budget for a regular upgrade test cycle. For APISIX, the current release is 3.19.0, released September 28, 2026, and the APISIX downloads page does not mark any release as long-term support. Ask in writing which line you will be supported on and for how long before you standardize on it.

Paid support and add-ons are the cost most affected by scope. Both projects are open source, but commercial layers exist. Traefik's documentation separates Traefik Proxy from Traefik Hub, a Kubernetes-native API management product, and from Traefik Enterprise, an API gateway, and directs commercial support requests to Traefik.io. API7 Enterprise is a commercial product from API7.ai built on APISIX. DeployOpen does not publish a price list. Its engagements are fixed-scope, so a quote follows from written scope. Ask each option for the same breakdown: who runs etcd backups or the Traefik configuration repository, how many upgrade cycles per year are covered, which test environments are included, what support hours and response terms apply, and which add-on features and license units are required. Equal breakdowns let you compare the two options on the same terms.

On an APISIX project, the schedule usually slips in three places: plugin selection, etcd sizing and backup, and the choice of deployment mode. APISIX ships more than 100 built-in plugins, so the first decision is which authentication, traffic control and observability plugins the gateway must run, and which of them your security team will accept on the data path. The second is the configuration center. In traditional and decoupled modes, etcd holds the routes, upstreams and plugin settings, so the team needs to size the cluster, test restore from backup and agree who owns those backups. The third is the choice between traditional, decoupled and standalone modes, which changes the Admin API port layout (9080 for client traffic and 9180 for the Admin API in traditional mode), the failure domains and the GitOps workflow. Ask the implementation partner to write down the mode decision and its reasons before any cluster is built.

On a Traefik project, the effort tends to move to provider configuration and to the conventions that define routes. Traefik discovers routes from providers such as Kubernetes CRD, Kubernetes Ingress, Kubernetes Gateway API, Docker and file configuration, so the team must decide which provider is authoritative for each cluster and avoid two sources defining the same route. Label or CRD conventions then need to be agreed and enforced, because automatically generated routes are only as predictable as the metadata behind them. If you are moving off the retired NGINX Ingress Controller, reconcile the ingress-nginx annotations you actually use against Traefik's Ingress NGINX provider support, and test each one rather than assuming a minimal change set. Confirm which Traefik release line your support plan covers before starting, since release support runs only until the next version ships.

DeployOpen plans and implements both kinds of work inside your own cloud accounts, data centers or air-gapped networks, and works to a fixed scope, deliverables and timeline agreed in writing before work starts. In the scope document, ask for the plugin or provider inventory, the etcd or provider design, the migration test plan for each legacy annotation or route, and the named owner for each backup and upgrade task. Those items are where a fixed scope either holds or changes, so settle them in writing before the quote is final.