The document summarizes the state of open APIs in 2010. Some key points include: - Open APIs have grown rapidly in recent years, with over 2,400 APIs listed by 2010 compared to just 105 in 2000. Growth has accelerated. - Successful APIs have a business model baked in, are easy to adopt, and provide good developer support. Common models include pay-per-use, affiliate marketing, and software as a service. - REST has become more popular than SOAP due to its simplicity. JSON is also growing as an alternative to XML. - Major tech companies are increasingly dependent on APIs, with billions of API calls per day powering services like Facebook and Amazon.

1. Open APIs: State of the Market John Musser, ProgrammableWeb @johnmusser Cloudstock, December 6 th , 2010

6. APIs: Some very competitive markets Based on directory of 2,300 web APIs listed at ProgrammableWeb, November 2010

7. Open APIs: Sampling growth by sector

8. Open APIs: Sampling growth by sector YouTube sells for $1.7B

9. Open APIs: Sampling growth by sector Facebook opens platform

12. API business models Best practice: Bake your business model into your API Who What How Amazon Associates Retail Affiliate Model Amazon S3 Infrastructure Pay-as-you-go eBay Auctions APIs for listings Exact Target Bulk Email Tiered pricing Rhapsody Music Partnerships Salesforce.com CRM / SFA SaaS per-seat licenses

13. APIs as biz-dev enabler (aka Bizdev 2.0) “ Decentralized business development” -Toni Schneider Consumer/Hacker Business/Partner Flickr API

14. API Billionaires Club 5 billion API calls / day (April 2010) 1.1 billion API-delivered stories / month (March 2010) 5 billion API calls / day (October 2009) 8 billion API calls / month (Q3 2009) 3 billion API calls / month (March 2009) 3 billion API calls / day, 75% of all traffic (April 2010) Over 50% of all traffic via API (March 2008) Over 100 billion objects stored in S3 (March 2010)

17. REST vs. SOAP: Simplicity wins again Distribution of API protocols and styles Based on directory of 2,300 web APIs listed at ProgrammableWeb, November 2010

18. REST vs. SOAP, more of both, but a lot more REST Total number of APIs based on protocol and style Based on directory of 2,300 web APIs listed at ProgrammableWeb, November 2010

19. Data formats: lots of choices XML, JSON, RSS, Atom, YAML, iCalendar, CSV, Serialized PHP, HTML, PNG, GeoRSS, vCard, Text, RDF, OPML, MediaRSS, VML, TV-Anytime, hCalendar, FOAF, XSPF, SQL, GML, CDF

20. JSON Rising: 45% of all new APIs support JSON Percentage of new APIs with JSON support 197 APIs are now JSON-only, including Facebook Graph, Etsy, and Twitter’s Streaming API Based on directory of 2,300 web APIs listed at ProgrammableWeb, November 2010

21. OAuth picking up steam 20% of all “Social” APIs now with OAuth support 120+ APIs with OAuth support

23. APIs growing up: versioning & other best practices Old Twitter http://twitter.com/users/show/noradio.xml New Twitter http://api.twitter.com/1/users/show/noradio.xml

24. APIs growing up: keeping developers informed

25. APIs growing up: keeping developers informed http://www.programmableweb.com/api/ebay/status

26. API monitoring: don’t let this happen to you via http://monitor.programmableweb.com …

27. APIs are the glue of SaaS Internal Apps & Systems Customize Integrate API Internal App: web/desktop Traditional Platform Customize Integrate API SaaS App SaaS Service Firewall

29. 1 API can support 100’s of devices Source: Michael Hart, Netflix

30. Mobile explosion is driving API explosion Source: NPR Pageview growth: NPR.org vs NPR mobile

31. API as Product When an API is not an extension of your product, but it is your product

32. Invisible Mashups, part 1 Classic mashup HousingMaps.com Invisible mashup Ooyala.com EC2 + S3 + SQS +

33. Invisible Mashups, part 2 + APIs are hiding in plain sight, if you know where to look

34. Have we seen this before? 1995 Why do we need a Web site? 2000 2005 2010 Of course we have a Web site Of course we have an API Why do we need an API?

35. thank you Questions, ideas, comments? Email me: john@programmableweb.com Twitter: @programmableweb @johnmusser