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World Congress 2026 Europe • Jul 10, 2026 • Session details

Beyond Webhooks: The Future of Scalable API Event Delivery

Phil Leggetter

Scaling traditional webhooks creates massive bottlenecks for modern API platforms. Discover why industry leaders are ditching fragile endpoints and migrating to highly resilient Event Destinations.

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#1 about 3 min

Analyzing billions of webhooks for developer platforms

Managing developer platforms provides insights into webhook delivery patterns at massive scale.

#2 about 2 min

The limits of reliable webhook delivery at scale

Handling massive event volumes exposes fundamental flaws in HTTP-based event delivery systems.

#3 about 2 min

The origins and evolution of the webhook model

Jeff Lindsay's 2007 proposal replaced polling with user-defined HTTP post requests to improve efficiency.

#4 about 4 min

Producer challenges in sending massive webhook volumes

Managing outbound connections and retries creates significant operational burden for event producers.

#5 about 3 min

Consumer challenges in ingesting and verifying webhooks

Maintaining robust infrastructure remains necessary to verify signatures and process asynchronous HTTP requests.

#6 about 3 min

Treating external events like internal event-driven architectures

Applying internal queue patterns to external event delivery bridges the gap between isolated systems.

#7 about 3 min

Benefits of shifting to durable event destinations

Moving events onto durable queues improves reliability and reduces ingestion infrastructure complexity.

#8 about 2 min

Reliable event delivery for artificial intelligence agents

Artificial intelligence agents require guaranteed event delivery to effectively consume data and trigger downstream actions.

#9 about 3 min

Core guidelines for implementing event destinations

Open guidelines define required and recommended practices for orchestrating robust event destination APIs.

#10 about 2 min

Recognizing when to adopt event destinations

Frequent timeout failures and complex reconciliations signal when platforms outgrow traditional webhook mechanisms.

#11 about 3 min

Using Outpost as an open source reference implementation

The Outpost project offers a production-grade tool supporting delivery to diverse message brokers.

#12 about 2 min

Questions on event destinations and vendor lock-in

Handling proprietary queue protocols and internal deduplication logic solves specific integration challenges.

Matching moments

2:38 min

High-level architecture for serverless event processing

Yan Cui Yan Cui · WWC 2025

4:14 min

Recognizing architectural drivers pushing event streaming system adoption

Mary Grygleski Mary Grygleski · LIVE

2:26 min

Mapping platform ecosystems as centralized architectural bottlenecks

Candost Dagdeviren Candost Dagdeviren · WWC 2025

6:15 min

Tracing the evolution of event-sourced microservices

David Leitner · LIVE

4:30 min

Introducing data management and the shift to streaming

Mary Grygleski Mary Grygleski · LIVE

3:09 min

Summarizing Python frameworks advantages and future event streams

Bobur Umurzokov · LIVE

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