I. SaaS provides software to users over the internet, allowing access from any device with a connection. Examples include Google Docs, GitHub, and youRoom. II. Amazon EC2/S3 provides cloud computing infrastructure as a service, allowing users to rent computing power and storage. This model provides sustainability by reducing upfront costs and shifting to pay-per-use. III. SaaS prioritizes maintainability through centralized updates and hosting on provider infrastructure. Users benefit from automatic updates and support is provided by the SaaS vendor rather than relying on in-house IT teams.

1.
http://kuranuki.sonicgarden.jp
kuranuki

2. 
46 1971 4 28

231


2,844
21 3 31

3. ⽬目
SonicGarden
2009 5 1
 SNS SKIP SaaS
 SNS /
 SNS SKIP
SonicGarden TIS
SEED’S

4.  SNS SNS
 SaaS
 Ruby on Rails
http://www.skipaas.jp

5. Share minds in your room.
http://youroom.in

6. http://r30.youroom.in/

7. •
•
•
•
•
• SaaS
•
•

8. I.
II. Amazon
III.
IV.
SI

10. ICT

11. : service
Wikipedia
Software as a Service

12. Point of Sales Point of Use
Point of Sales
Point of Use
q
q
t
t

13. SaaS


 
Time is Money.

14. SaaS

16. 



17. Amazon EC2/S3
Amazon.com IT
(Hardware as a Service)

18. Amazon EC2/S3
/
Amazon
HTTPS
Amazon EC2 Resource Pool Amazon S3
API
HTTPS

19. Amazon EC2/S3




 API
 / OS

 EC2


20. Amazon EC2/S3
~ / / ~
SonicGarden
( ), ( )

22. Sustainability

24. TODO
SaaS
OSS

25.  TODO
 GoogleDocs
 http://docs.google.com/

 GitHub
 https://github.com/

 youRoom
 http://youroom.in/

27. Maintainability

29. 



30. 



31. 


 youRoom
 Git
 SpreadSheet TODO




33. I.
Point of Use
II. Amazon
Sustainability
III.
Maintainability
IV.

34. http://youroom.in
TIS