In addition to its own suite of web applications, Google offers a wealth of world-class APIs and tools that can help startups and well-established businesses alike easily (and cheaply!) add significant value to their desktop, mobile, and web-based applications. In this presentation, I will provide a broad overview of the 70 APIs and developer tools that Google offers, touching on everything from the assortment of Apps, AJAX, and geo APIs (e.g. Calendar, YouTube, Maps, and Search, just to name a few), open web initiatives, mobile and social products including Android and Buzz, development/hosting solutions, and more. Rather than diving deeply into one API in particular -- that comes a bit later -- this session is designed to open your eyes to the bounty of Google APIs available and help inspire you to find creative ways of using them to enhance your present or future business, or even, dare I say it, change the world.

1. Overview of Google
Developer Technologies
February 26th, 2010
St. Louis Innovation Camp
Jason Cooper
Developer Programs Engineer
jasonacooper@google.com

2. What is an API?

3. Application
Programming
Interface

4. Application
Programming
Interfaces...
enable applications to interact with other applications.

5. Application
Programming
Interfaces...
enable developers to build interesting applications
more easily, quickly and cheaply than otherwise possible.

6. Application
Programming
Interfaces...
enable developers to "mash up" data from various sources.

7. Don't reinvent the wheel:
leverage others' strengths

8. Great resource for API development
http://www.programmableweb.com
Categorized directory of APIs
Directory of mashups

9. 70+ APIs and developer tools
for web, mobile, and desktop apps
http://code.google.com/more

10. What's in it for Google?
Users can more easily import (and export!) their data.
Google application users get more features that they want.
The Web becomes more interesting and engaging for more
users.

11. Data Liberation
http://www.dataliberation.org/

12. Classes of Google developer technology
Product APIs
Application platforms
Developer tools

13. Classes of Google developer technology
Product APIs
Application platforms
Developer tools

14. 1. Product APIs
AJAX APIs
Search
Maps
Earth
Translate
Google Data APIs
Google Apps
Google Calendar
Google Finance
Google Health
Google Spreadsheets
YouTube

15. Google Data APIs (Atom + more)

16. Google Data APIs (Atom + more)
Data Model has 2 base types:
feed: a container of data items
entry: a single data item
APP has 4 operations:
Create (POST)
Retrieve (GET)
Update (PUT)
Delete (DELETE)
The Google Data Protocol extends AtomPub for processing
queries, authentication, and batch requests.

17. Google Data APIs (Atom + more)
<?xml version='1.0' encoding='utf-8'?>
<feed>
<title>Foo</title>
<updated>2006-01-23T16:25:00-08:00</updated>
<id>http://www.example.com/myFeed</id>
<author>
<name>Jo March</name>
</author>
<link href='/myFeed' rel='self'/>
<entry>
...
</entry>
<entry>
...
</entry>
</feed>

18. Google Data APIs: retrieving
Request: Response:
200 OK
GET /myFeed
<?xml version='1.0' encoding='utf-8'?>
<feed xmlns='http://www.w3.org/2005/Atom'
xmlns:gd='http://schemas.google.com/g/2005'
gd:etag='W/"C0QBRXcycSp7ImA9WxRVFUk."'>
<title>Foo</title>
<updated>2006-01-23T16:25:00-08:00</updated>
<id>http://www.example.com/myFeed</id>
<author>
<name>Jo March</name>
</author>
<link href='/myFeed' rel='self'/>
</feed>

19. Google Data APIs: creating
Request: Response:
201 CREATED
POST /myFeed
<?xml version='1.0' encoding='utf-8'?>
<entry xmlns='http://www.w3.org/2005/Atom'
<?xml version='1.0' encoding='utf-8'?> xmlns:gd='http://schemas.google.com/g/2005'
<entry xmlns='http://www.w3.org/2005/Atom'> gd:etag='"CUUEQX47eCp7ImA9WxRVEkQ."'>
<author> <id>http://www.example.com/id/1</id>
<name>Elizabeth Bennet</name> <link rel='edit' href='http://example.
<email>liz@gmail.com</email> com/myFeed/1/1/'/>
</author> <updated>2006-01-23T16:26:03-08:00</updated>
<title type='text'>Entry 1</title> <author>
<content type='text'> <name>Elizabeth Bennet</name>
This is my entry <email>liz@gmail.com</email>
</content> </author>
</entry> <title type='text'>Entry 1</title>
<content type='text'>This is my entry</content>
</entry>

20. Google Data APIs: querying
Request: Response:
200 OK
GET /myFeed?q=this
<?xml version='1.0' encoding='utf-8'?>
<feed xmlns='http://www.w3.org/2005/Atom'
xmlns:gd='http://schemas.google.com/g/2005'
gd:etag='W/"S0wCTlpIIip7ImA0X0QI"'>
...
<entry gd:etag='"CUUEQX47eCp7ImA9WxRVEkQ."'>
<id>http://www.example.com/id/1</id>
<link rel='edit' href='http://example.com/myFeed/1/'/>
<updated>2006-01-23T16:26:03-08:00</updated>
<author>
<name>Elizabeth Bennet</name>
<email>liz@gmail.com</email>
</author>
<title type='text'>Entry 1</title>
<content type='text'>This is my entry</content>
</entry>
</feed>

21. Classes of Google developer technology
Product APIs
Application platforms
Developer tools

22. 2. Application platforms
Web
Android
OpenSocial

23. Android
At the close of 2009:
18-20 devices
30+ carriers in 21
countries
12,000+ applications in
the Android Market
No. 2 in U.S. mobile web
browsing
4 platform releases and
counting...

24. OpenSocial

26. Classes of Google developer technology
Product APIs
Application platforms
Developer tools

27. 3. Developer tools
Google Web Toolkit
Closure Tools
App Engine

28. Classes of Google developer technology
Product APIs
Application platforms
Developer tools
70+ APIs and developer tools
for web, mobile, and desktop apps

29. http://code.google.com/more
Jason Cooper
Developer Programs Engineer
jasonacooper@google.com