# How Hookdeck Solves the Hardest Webhook Challenges Webhooks look simple on the surface — an HTTP POST from one system to another. But in production, that simplicity breaks down fast. Payloads arrive out of order, endpoints go down, retries create duplicates, and debugging a failed delivery across two systems with no shared logging is a nightmare. Most teams discover this the hard way. They build a basic webhook handler, ship it, and then spend weeks patching reliability gaps they didn't anticipate. And when the time comes to send webhooks to their own customers, they find the same set of problems waiting on the other side. [Hookdeck](/) is webhook infrastructure with two core products: * [Event Gateway](/event-gateway) — managed infrastructure for receiving, routing, and delivering inbound webhooks. It handles ingestion, retries, observability, and error recovery so you don't have to build it yourself. * [Outpost](/outpost) — open-source infrastructure for sending outbound webhooks to your customers. Available self-hosted or as a managed service, with multi-tenant delivery, retries, and a customer-facing portal included. Below are the most common webhook challenges, why they're harder than they seem, and how Hookdeck solves each one. ## Receiving webhooks with Event Gateway ### Reliability and retries Webhooks fail. Destination servers go down, deploy windows cause brief outages, and network issues drop requests. Without automatic retries, those events are lost. But retries introduce their own problems. Retry too aggressively and you overwhelm a server that's already struggling. Retry without backoff and you amplify the failure. Don't track what's been retried and you lose visibility into what actually succeeded. Most teams start with a basic retry loop and then discover they need exponential backoff, failure tracking, dead letter handling, and manual replay — essentially building a delivery pipeline from scratch. Learn more: * [Taking control of your webhook reliability](/webhooks/guides/taking-control-of-your-webhook-reliability) * [Webhook delivery guarantees](/webhooks/guides/webhook-delivery-guarantees) * [Dead letter queues for webhook reliability](/webhooks/guides/dead-letter-queues-webhook-reliability) How Event Gateway solves this: Event Gateway [automatically retries](/docs/retries) failed deliveries with configurable backoff strategies. When failures occur, it groups them into [Issues](/docs/issues) — so you can see the root cause, review all affected events, and bulk retry them with one click once the problem is resolved. [Rate limiting](/docs/destinations) on destinations prevents retries from overwhelming your servers. ### Observability and debugging When a webhook fails, the first question is always: what happened? Was the payload malformed? Did the destination return an error? Was the request even sent? Without dedicated tooling, answering these questions means correlating logs across the webhook provider, your infrastructure, and your application — systems that don't share request IDs, timestamps, or log formats. Most teams don't build webhook-specific observability because the upfront investment seems disproportionate to the problem. Then something breaks in production and they're debugging blind. Learn more: * [Webhook observability architecture](/webhooks/guides/webhook-observability-architecture) * [Guide to troubleshooting and debugging webhooks](/webhooks/guides/guide-troubleshooting-debugging-webhooks) * [What to monitor in a webhook infrastructure](/webhooks/guides/what-to-monitor-in-a-webhook-infrastructure) How Event Gateway solves this: Every webhook that flows through Event Gateway gets a complete trace — from the inbound [request](/docs/requests) to the outbound [event](/docs/events) delivery, including headers, payloads, response codes, and timing. [Metrics](/docs/metrics) give you trend data across all your connections. When something goes wrong, you can search, filter, and inspect any delivery without touching a log aggregator. ### Security and verification Webhook endpoints are public URLs. Anyone who discovers the URL can send requests to it, which means every webhook endpoint is a potential attack vector for spoofed payloads. The standard defence is HMAC signature verification — the provider signs the payload with a shared secret and you verify the signature on receipt. But each provider implements signing differently (different algorithms, different header names, different payload encoding), and getting verification wrong means either rejecting legitimate webhooks or accepting forged ones. Learn more: * [Complete guide to webhook security](/webhooks/guides/complete-guide-to-webhook-security) * [Webhook security vulnerabilities guide](/webhooks/guides/webhook-security-vulnerabilities-guide) * [How to implement SHA-256 webhook signature verification](/webhooks/guides/how-to-implement-sha256-webhook-signature-verification) How Event Gateway solves this: Event Gateway handles [signature verification](/docs/authentication) for you, with pre-configured support for 120+ webhook providers. Each provider's signing method is already implemented — you select the provider, enter the signing secret, and Event Gateway verifies every inbound request before it reaches your server. Unverified requests are rejected automatically. ### Ordering and idempotency Webhooks are not guaranteed to arrive in order. A `payment.completed` event can arrive before the `payment.created` event that preceded it. Processing them in the wrong order can corrupt your application state. Similarly, at-least-once delivery means you will receive duplicates. Without idempotent processing, a retried `order.placed` webhook could create two orders instead of one. Building ordering and deduplication logic is straightforward for a single webhook source — but it compounds in complexity as you add more providers, each with their own event ID formats and delivery guarantees. Learn more: * [Webhook ordering: why it's hard and how to handle it](/webhooks/guides/webhook-ordering-why-its-hard-and-how-to-handle-it) * [Implement webhook idempotency](/webhooks/guides/implement-webhook-idempotency) How Event Gateway solves this: Event Gateway provides built-in [deduplication](/docs/deduplication) that detects and suppresses duplicate deliveries before they reach your server. You can also use [filters](/docs/filters) to route events based on payload content or headers, and [transformations](/docs/transformations) to normalise payloads from different providers into a consistent format your application expects. ### Scaling under load Webhook volume is unpredictable and outside your control. A flash sale on Shopify, a batch operation on Stripe, or a deployment triggering hundreds of GitHub webhooks can send a burst of traffic that overwhelms your server. Without backpressure controls, your application either drops webhooks or degrades under load. Building a queueing layer to absorb spikes means introducing message brokers, worker processes, and all the operational overhead that comes with them. Learn more: * [Why you should stop processing webhooks synchronously](/webhooks/guides/why-you-should-stop-processing-your-webhooks-synchronously) * [How to choose a solution for queuing your webhooks](/webhooks/guides/how-to-choose-a-solution-for-queuing-your-webhooks) * [How an asynchronous approach mitigates scalability concerns](/webhooks/guides/how-an-asynchronous-approach-mitigates-scalability-concerns) How Event Gateway solves this: Event Gateway acts as a managed queue between your webhook providers and your application. Inbound webhooks are ingested immediately and delivered to your [destinations](/docs/destinations) at a rate you control. You set the maximum delivery rate per destination, and Event Gateway handles the buffering. Your servers never see more traffic than they can handle, and no webhooks are lost during spikes. ### Testing and local development Testing webhooks locally is painful. You need a tunnel tool to expose your local server, a new URL every session, and you have to trigger real events in the provider to generate test payloads. Replaying a specific edge case means reproducing the exact conditions that caused it — which may not be possible in a test environment. This friction slows down development cycles and makes webhook integrations harder to iterate on than regular API integrations. Learn more: * [Complete guide to webhook testing](/webhooks/guides/complete-guide-webhook-testing) * [Troubleshooting and debugging webhooks tutorial](/webhooks/guides/troubleshooting-debugging-webhooks-tutorial) How Event Gateway solves this: The [Hookdeck CLI](/docs/cli) gives you a permanent webhook URL that doesn't change between sessions and proxies events to your local server. Past events are preserved — you can [replay](/docs/events) any historical webhook with one click, without regenerating it in the provider. [Bookmarks](/docs/bookmarks) let you pin specific payloads for repeated testing. ## Sending webhooks with Outpost The challenges above apply when you're consuming webhooks from other services. But if you're building a platform that needs to send webhooks to your customers, you face an entirely different set of problems. Learn more: * [Why your platform needs outbound webhooks and how to ship them](/outpost/guides/why-your-platform-needs-outbound-webhooks-and-how-to-ship-them) * [Common outbound webhook mistakes](/outpost/guides/common-outbound-webhook-mistakes) ### Delivery and retries Your customers' endpoints will go down — deploys, misconfigurations, infrastructure issues. When that happens, you need to retry deliveries without losing events or overwhelming their servers. You also need to sign every payload so customers can verify it came from you, and you need to support different signing secrets per customer. Building this yourself means implementing retry queues with backoff, HMAC signing, per-customer secret management, and delivery logging — a significant investment before you've sent a single webhook. Learn more: * [Outbound webhook retry best practices](/outpost/guides/outbound-webhook-retry-best-practices) * [Webhook payload best practices](/outpost/guides/webhook-payload-best-practices) How Outpost solves this: [Outpost](/outpost) provides at-least-once delivery with configurable retry strategies, HMAC signing with per-tenant secret rotation, and topic-based pub/sub routing. It supports delivery beyond HTTP — including Amazon SQS, Google Cloud Pub/Sub, and Amazon EventBridge — so your customers can receive events wherever they need them. Outpost is available [self-hosted](https://github.com/hookdeck/outpost) for full control, or as a [managed service](/outpost) starting at $10 per million events. ### Multi-tenancy Every customer needs their own endpoints, their own signing secrets, and their own delivery state. One customer's failing endpoint can't create backpressure that delays deliveries to everyone else. As you scale from tens to thousands of tenants, the isolation and management overhead grows fast. Most teams start by storing endpoints in a database column and looping through them to send events. That works at small scale, but falls apart when you need per-tenant retry state, isolated failure tracking, and the ability to onboard new customers without code changes. Learn more: * [Multi-tenancy for outbound webhooks](/outpost/guides/multi-tenancy-outbound-webhooks) * [Webhook topics and subscriptions](/outpost/guides/webhook-topics-and-subscriptions) How Outpost solves this: Multi-tenancy is a first-class concept in Outpost. Each tenant gets isolated delivery tracking and independent retry state, so one customer's failing endpoint never affects another. Tenants are created and managed programmatically via the API or SDKs, and each tenant's events are tracked independently with full delivery history. ### Customer self-service When a webhook delivery fails, your customers need to know about it — and they need to be able to fix it themselves. Without a self-service portal, every failed delivery becomes a support ticket. Your team ends up debugging your customer's endpoint configuration, replaying events manually, and answering questions about payloads you've already delivered. Building a customer-facing webhook dashboard — with delivery logs, retry controls, and endpoint management — is a full product feature that diverts engineering time from your core product. Learn more: * [Webhook consumer self-service portal](/outpost/guides/webhook-consumer-self-service-portal) * [Webhook alerting and notifications](/outpost/guides/webhook-alerting-and-notifications) How Outpost solves this: Outpost includes a built-in [tenant portal](/outpost/guides/webhook-consumer-self-service-portal) that your customers can use to manage their own destinations, view delivery history, and debug failed deliveries — without filing support tickets. The portal is themeable and can be embedded in your application via iframe or accessed as a standalone page. If you need more control, you can [build your own UI](https://hookdeck.com/docs/outpost/guides/building-your-own-ui) using the same API the portal is built on. ## Try Hookdeck for free Whether you're receiving webhooks or sending them, Hookdeck has a free tier so you can evaluate with real traffic before committing — no credit card required. * Receiving webhooks? [Get started with Event Gateway →](https://dashboard.hookdeck.com/signup) * Sending webhooks? [Get started with Outpost →](/outpost) Or if you want to see a webhook in action first, [open the Hookdeck Console](https://console.hookdeck.com) to inspect a real webhook payload in your browser (no account needed).