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API governance is the framework of policies, standards, and processes that ensure APIs across an organization are secured, deployed, and managed consistently, in alignment with business objectives. Without it, every team makes different decisions and every Gateway becomes a liability.
Why it matters
Governance gaps rarely announce themselves. They show up as security incidents, audit failures, and deployment pipelines that break because two Gateways disagree on what a policy should do.
Ungoverned APIs are a leading attack vector. Without enforced auth and threat protection, every exposed endpoint is a potential entry point.
Hand-crafted, snowflake policies on each Gateway mean high maintenance burden and deployment failures during multi-cluster sync.
A central ops bottleneck where every API needs hand-written policy is the opposite of self-service. Teams wait, delivery slows.
Regulators increasingly require provable, repeatable controls. Manual governance can't produce audit trails that hold up.
How Layer7 operationalizes governance
The Broadcom Layer7 API Developer Portal turns governance from a set of intentions into an enforced, auditable system, across every Gateway, every environment, every cluster.
Reusable, pre-approved policy components. Built once, applied consistently. No per-API reinvention..
The layer that turns templates into rules. "Every API must use one of these auth templates" becomes a system constraint, not a guideline.
Publishers ship governed APIs without an ops bottleneck. Governance travels with the API, not through a ticket queue.
The Portal pushes templates to Gateways across Dev/Staging/Prod and geographic clusters. One source of truth, everywhere.
Policy templates
A policy template is a reusable policy component applied at publishing time and enforced at runtime by the API Gateway. There are two types, and the distinction matters.
Auto-installed, cannot be deleted, but can be hidden. Monolithic by design, not intended to combine with custom routing logic.
The recommended approach for real governance. Modular, composable, and built to work alongside custom routing policies without conflict.
Publishing models
Where a template lives determines how reliably it's enforced. Mismatches between Gateways are a leading cause of API deployment failures in multi-cluster environments.
Lives on each individual Gateway. You must manually replicate the template (via Graphman or GMU) to every enrolled Gateway. Mismatches between environments cause API deployment failures.
Centrally managed. The Portal pushes templates to chosen Gateways on demand. One source of truth across environments and geographic clusters. That's how you prove every Gateway enforces the same controls.
End-to-end workflow
Building a governed policy template follows a repeatable process, from development in Policy Manager to enforcement across all enrolled Gateways.
Key rules & behaviours
Best practices
A well-structured governance model covers threat protection, authentication, rate limiting, validation, routing, and observability, each as a separate category with defined enforcement rules.
| Category | Template(s) | Category Usage | Template Usage |
|---|---|---|---|
| Threat Protection | Corporate Threat Protection | Required | All |
| Authentication | OAuth 2.0 API Key/Secret mTLS with API Key |
Required | At least one |
| Rate & Quota Enforcement | Rate and Quota System Template | Required | All |
| Message Validation | Validate OpenAPI Specification Validate JSON Schema Validate XML Schema |
Required | At least one |
| Routing | Route via HTTPS Route via HTTPS with JWT Route via HTTPS with mTLS |
Required | At least one |
| Response Processing | Capture Metrics | Required | All |
| Logging | Capture Log Info | Optional and Flexible | Optional |