by Shuli Yu - Presentation given at the 2nd International Workshop on Web APIs and Mashups (at ICSOC2008) on December 1st, 2008 in Sydney, Australia. http://www.icsoc-mashups.org/

1. innovation in the programmable web
characterizing
the mashup
ecosystem
Shuli Yu ‐ Singapore Management University
for Mashups ’08 @ ICSOC

3. a

4. is made of…
+ integrate

5. is made of…
API
+ integrate
Mashup
API
registered in
and these are

6. the

8. m ashup

9. s napshot
s APIs
Network intervals
:
th
@ 6 mon 007
to Dec 2
Dec 2005
m

10. m API
m
m
API
API m
m
API
2‐mode network

11. m API
m
m
API
API m
m
API
mashup
ecosystem

12. m API
m
m
API
API m
m
API
2664 mashups594 APIs

13. what are the characteristics?
m API
m
m
API
API m
m
API
growth structure
patterns

14. growth...
mashups per month
20 APIs per month

15. apis ranked

16. apis ranked
top 20 APIs

17. top 20 APIs

18. power law

19. long

20. Chris Anderson (2004): The Long Tail, Wired

21. Kalevi Kilkki (2007): A practical
model for analyzing long tails, First Monday
share of total volume total volume
covered by objects up to
rank x
factor that defines the form
the number of objects
that cover half of the
whole volume

22. pareto rule
20% of the causes result in
of the effects

23. pareto rule?
20% of top APIs have created
of the mashups

24. another observation…
51% of all APIs have
no mashups
>4 mashups
3 mashups
0 mashups 2 mashups
1 mashup

25. 18% 4% 8% 15% 51%
>4 3 2 1 0 mashups
long

26. 0.68 0.86
exponent:
x16
APIs with
1 mashup
x9
top API:
Google Maps

27. API
m API m
m
m API
m
API m
API API
m m
m m m
API
m
m
m
API
API m API
API
m
m
API
structure?

28. social network analysis
node repulsion

29. dec 2005

30. jun 2006

31. dec 2006

32. jun 2007

33. dec 2007

34. dec 2007 again

35. API Tier 2:
Social/Community,
API Tier 1: Search
Google popular APIs
Many
Maps
API Tier 3:
Feeds, blogging, online
retail, music, video
Less popular APIs

36. keystone

37. keystones
business strategy:
create and (2) share value
(1)
by creating platform
services, tools or technologies
that offer solutions to
others
Iansiti and Levien (2004): Strategy as ecology

38. platform APIs
mapping, search, community
data APIs
news, pictures, videos, music, shopping

39. so… what matters?
type of service
a mashup provides
affects its compatibility
others
with

40. so… what else could matter?
existing popularity
time (age)
rating
security
licensing model
protocols and data formats

41. regressions
time series
analysis

42. what makes an API successful?
how to determine what role and
position in the network is most
appropriate?
to think about.

43. and many thanks, also, to
Jason Woodard – John Musser – Darshan Santani

44. the extras

45. Bala Iyer (2007)