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Dev & Engineering · Engineering, IT & AI
Should you build or buy Webhook Infrastructure / Event Gateway?
Webhook infrastructure and event gateway software manages the reliable delivery, retry, and routing of webhook events between systems — handling HMAC signing, dead-letter queuing, replay, and fan-out so applications can emit events without owning the delivery guarantees. It sits between an event producer and downstream consumers to ensure messages arrive even when services are temporarily unavailable.
The build-vs-buy decision for Webhook Infrastructure turns on how much operational overhead your team wants to own for queue infrastructure and whether zero-ops managed delivery is worth the subscription cost; the specifics of your platform engineering capability and event volume decide it.
- Domain
- Dev & Engineering
- Function
- Engineering, IT & AI
- Industries
- Cross-industry
Last assessed June 2026 · re-scored quarterly via The Continuum.
Build it, buy it, or bridge?
| Build it | Buy it | Bridge (buy, then extend) | |
|---|---|---|---|
| Cost shape | Self-hosted Convoy near zero; SQS/Lambda retry at AWS compute rates | Svix at $490/month; Hookdeck scales with event volume | Convoy OSS on existing infrastructure with vendor monitoring overlay |
| Time to value | Convoy self-host is a multi-day setup; SQS pattern is a few days | Managed webhook platforms are operational in hours | OSS deployment in a sprint; vendor fallback for replay UI |
| Differentiation captured | Custom retry policies and signing schemes for your event topology | Vendor defaults cover 80%+ of delivery requirements without customization | Core delivery self-built; vendor-managed replay and audit overlay |
| AI feasibility today | AI-generated webhook handler boilerplate has accelerated custom builds | Managed platforms add ops-free delivery guarantees, not novel capability | AI-scaffolded queue infrastructure with commercial replay UI |
| Who it fits | Teams with platform engineers who already own queue infrastructure | Zero-ops environments needing managed delivery with UI-based replay | Teams with existing queues who want structured event observability |
When building Webhook Infrastructure / Event Gateway makes sense
Building webhook delivery infrastructure makes sense when you have platform engineers who already operate SQS, Redis queues, or similar queue systems as part of your stack. Convoy ships as a full MIT-licensed webhook gateway that self-hosts on a single instance, and teams routinely build equivalent functionality on top of SQS and Lambda retry handlers. The build case is strongest for teams with predictable event volumes and existing queue infrastructure — the incremental cost of adding webhook delivery patterns on top of infrastructure you already run is low. AI-generated boilerplate has made the initial scaffolding faster than it was a few years ago. If you're looking at $490 per month for Svix against a Convoy deployment that runs at infrastructure cost, the math usually favors building when the platform team has capacity to own it.
When buying Webhook Infrastructure / Event Gateway makes sense
Buying earns its keep in zero-ops environments where managing queue infrastructure isn't something the team wants to own. The concrete commercial value is managed delivery guarantees with a UI for replaying failed events — when a downstream service was down for 20 minutes and you need to replay 800 events in order, having a vendor-managed audit trail and replay capability is worth the subscription. Hookdeck and Svix both handle dead-letter queuing, HMAC signing, and delivery tracking without requiring engineering time to maintain. For API platform teams building multi-tenant webhook delivery — where customers subscribe to your events — the managed layer handles the operational complexity that a homegrown solution would require continuous maintenance to sustain.
Webhook delivery looks simple until you're debugging a production incident where events arrived out of order, a downstream service was down for 20 minutes, and you have no replay capability. The retry logic, dead-letter queuing, HMAC signing, and delivery audit trail are the actual hard parts. Convoy ships as a full MIT-licensed gateway you can self-host on a single instance, and teams routinely build equivalent functionality on top of SQS, Redis queues, and Lambda retry handlers.
Hookdeck and Svix earn their keep when you're operating a zero-ops environment, don't want to run infrastructure, and need managed delivery guarantees with a UI for replaying failed events. The build case gets serious when you have platform engineers who already own queue infrastructure, your event volume is predictable, and you're looking at $490/month for Svix against a self-hosted Convoy deployment that runs at infrastructure cost. AI-generated webhook handler boilerplate has also made the custom build path faster than it was two years ago.
Representative vendors
HookdeckConvoy
and 3 more, scored in B4 Pro
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Frequently asked
- What is Webhook Infrastructure / Event Gateway?
- Webhook infrastructure and event gateway software manages the reliable delivery, retry, and routing of webhook events between systems — handling HMAC signing, dead-letter queuing, replay, and fan-out so applications can emit events without owning the delivery guarantees. It sits between an event producer and downstream consumers to ensure messages arrive even when services are temporarily unavailable.
- When does building Webhook Infrastructure / Event Gateway make sense?
- Building makes sense when you have platform engineers who already operate queue infrastructure like SQS or Redis. Convoy ships as a free MIT-licensed gateway, and AI-generated webhook handler code has lowered the initial scaffolding cost considerably. For teams with predictable event volumes and existing queues, the incremental cost of owning delivery infrastructure is low.
- When does buying Webhook Infrastructure / Event Gateway make sense?
- Buying earns its keep in zero-ops environments where the team doesn't want to maintain queue infrastructure, or when you need a managed UI for replaying failed events without engineering intervention. Multi-tenant webhook delivery — where your customers subscribe to your platform's events — is particularly well-suited to managed platforms.
- What are the main Webhook Infrastructure / Event Gateway vendors?
- Representative vendors include Hookdeck, Convoy, Hook0, Inngest. B4 Pro scores the full set.
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