The document discusses the evolution of the web from content-based to increasingly service-oriented and event-driven. It describes how early web platforms focused on static content, while Web 2.0 introduced more dynamic APIs allowing users to access and compose services. Modern cloud platforms now expose event-driven APIs using webhooks to trigger actions in response to events, extending the web with integration and extensibility. The event-driven paradigm represents the next stage in the evolution of the web to a more programmable platform.

1. Building an Event-driven Web
Jeff Lindsay

2. Web 2.0
‘‘Web as a Platform’”

3. API Web
Application Web
Content Web
1990 2000 2011
Web 2.0
2003

4. Service-oriented Web
SOA: Service Oriented Architecture

5. Simple Email Service
S3
EC2
FPS MapReduce
CloudFront EBS
SimpleDB
SNS
SQS

7. The Mashup

8. Composition
vs
Integration

10. The Web API (SOA)
is designed for composition,
not integration

11. The Evented Web

14. WebHooks
When something happens,
perform HTTP POST with
relevant data to a URL that
the user gives you.

15. PayPal IPN

16. Twilio

19. The Evented Web
Extending the API web with
the event-driven paradigm.
Uses HTTP event trigger
(webhooks)
Brings integration and
extensibility to the web

20. Jeff Lindsay
Thanks! @progrium
Evented Web Summit in July
http://j.mp/eventedweb