What is webhook infrastructure?
Webhook infrastructure is the set of systems that send and receive webhooks reliably at scale. It covers the work that surrounds an HTTP POST: queueing deliveries, signing and verifying requests, retrying failures, isolating broken endpoints, and logging every attempt so you can debug what happened.
What webhook infrastructure includes
A single webhook is just an HTTP request. What makes it infrastructure is everything you need around that request to keep it trustworthy and durable under load.
- Queueing. Events are enqueued rather than sent inline, so a slow or unreachable endpoint never blocks the application that generated the event.
- Signing and verification. Each delivery carries a webhook signature so the receiver can confirm the request is authentic and untampered before acting on it.
- Retries. Failed deliveries are retried with exponential backoff following a retry policy, and deliveries that keep failing land in a dead-letter queue instead of disappearing.
- Rate limiting. A rate limit protects both sender and receiver from bursts that would otherwise overwhelm a downstream service.
- Monitoring. Delivery logs, status, and alerts give you one place to see failures and replay them, which is the core of any webhook monitoring setup.
Bundle these concerns into one layer and you get a webhook gateway. Spread them across a full sending and receiving platform and you get a managed webhook service.
Sending versus receiving webhooks
The two directions need different things. When you send webhooks, the hard problems are fan-out, per-endpoint retries, and giving your customers visibility into their own deliveries. When you receive webhooks, the work is verifying signatures, absorbing spikes, and processing events idempotently so a retried delivery does not run twice. Most teams underestimate the sending side, because it means operating queues, retry logic, and a status dashboard for every customer endpoint.
Building versus buying
You can build webhook infrastructure on your own stack, typically a queue such as Redis or Kafka behind a worker pool that handles signing, retries, and logging. That path is reasonable when your needs are simple and volume is low. It gets expensive as you add per-endpoint backoff, dead-letter handling, replay, signature rotation, and a portal your customers can inspect, because each of those is a project on its own.
A managed service like Svix provides that whole layer, so you send an event through an API and it handles queueing, signature verification, retries, and delivery logs. If webhooks are a feature of your product rather than your core business, buying the infrastructure usually costs less than staffing it.
Frequently asked questions
Is a webhook gateway the same as webhook infrastructure?
A webhook gateway is one part of it. The gateway centralizes verification, routing, retries, and logging in front of your receivers. Webhook infrastructure is the broader term covering both sending and receiving, including queueing, dead-letter handling, and monitoring end to end.
What do I need to receive webhooks reliably?
Verify the signature on every request, return a fast 2xx and process the event asynchronously, handle deliveries idempotently so retries are safe, and absorb bursts with a queue. Log each request so you can debug and replay failures.
Should I build or buy webhook infrastructure?
Build it when volume is low and requirements are simple. Buy it once you need per-endpoint retries, dead-letter queues, replay, signature rotation, and a customer-facing delivery log, since maintaining those in-house is an ongoing cost rather than a one-time build.