Aserto builds on OPA + directory. WardenAuth is standalone RBAC + ReBAC.
Aserto combines OPA policy evaluation with a real-time user directory — giving you attribute-based access control with live user data. But it requires running an OPA sidecar, learning Rego, and maintaining a directory sync. WardenAuth provides RBAC, ReBAC, and ABAC conditions without Rego, without a sidecar, and without a directory dependency.
Overview
Aserto's architecture is innovative — it pairs an OPA-based policy engine (the Topaz runtime) with a real-time directory of user attributes. This enables ABAC decisions that automatically incorporate up-to-date user context.
But the complexity is real: you run a sidecar container, write Rego policies, manage a directory connector, and build your own RBAC management UX. For teams that want fine-grained authorization without operating a policy engine sidecar, WardenAuth's managed API is simpler.
Aserto — Strengths
- Real-time directory for user attributes
- OPA-based policy engine
- Sidecar deployment model
- Developer-focused tooling
- Decision logging built-in
Aserto — Limitations
- Requires running a sidecar container
- Still requires Rego knowledge
- Directory dependency — must sync user data
- No built-in RBAC management dashboard
- No multi-tenancy primitives
- No SoD, approvals, or API key management
Pricing comparison
| Scenario | Aserto | WardenAuth |
|---|---|---|
| Getting started | Free tier (community edition) | Free (50K checks, managed) |
| 1M checks/month | Custom pricing (paid plans) | $79/mo (Starter) |
| Management UX | Must build yourself | Included dashboard |
Feature comparison
| Feature | Aserto | WardenAuth |
|---|---|---|
| Fine-grained RBAC | Via Rego | |
| ABAC / attribute conditions | ||
| Real-time user directory | ||
| ReBAC / relationships | ||
| Management dashboard | ||
| Audit trail | Decision log | |
| Multi-tenant scopes | ||
| SoD / Approval workflows | ||
| API key management | ||
| Sidecar deployment | ||
| Managed cloud platform | ||
| Flat-rate pricing |
When each makes sense
Choose Aserto if you need ABAC with real-time user attributes, already have OPA/Rego expertise, want to embed the PDP as a sidecar, or need attribute-based decisions that incorporate live directory data (group memberships, department changes).
Choose WardenAuth if you want managed RBAC + ReBAC without running a sidecar, writing Rego, or maintaining a directory connection. If attribute conditions can be passed at request time (rather than queried from a live directory), WardenAuth's ABAC condition model is simpler.
Aserto is a good fit if you need OPA-based ABAC with real-time directory data and are comfortable running sidecars. For most SaaS authorization needs — roles, permissions, scopes, and audit — WardenAuth's managed platform is simpler and doesn't require Rego, sidecars, or directory sync.
See for yourself — no credit card required.