1. The Cloud as the
New Middleware Platform
Gregor Hohpe
Track Host
www.eaipatterns.com
www.conversationpatterns.com
© 2007 Google, Inc. All rights reserved,

2. Created by Ludwig Gatzke
© 2007 Google, Inc. All rights reserved, 2

3. Web 2.0 – From the Horse’s (Tim’s) Mouth
1. Web as Platform
2. Harnessing Collective Intelligence
3. Data is the next Intel Inside
4. End of the Software Release Cycle
5. Lightweight Programming Models
6. Software Above the Level of a Single Device
7. Rich User Experiences
© 2007 Google, Inc. All rights reserved, 3

4. The Cloud as Middleware Platform
Mashups Portals
Presentation
Maps Plug-Ins
Transformation / Transformation Aggregation
Aggregation Adapters Gateways
Business Sales Auto. CRM Location
Apps & Services Calendar Text Proc. Currency
GData
Infrastructure Storage Queuing Lock / Coord.
Services Processing Relay Mapreduce
© 2007 Google, Inc. All rights reserved, 4

5. The Cloud as Middleware Platform
Mashups Portals
Presentation
Maps Plug-Ins
Transformation / Transformation Aggregation
Aggregation Adapters Gateways
Business Sales Auto. CRM Location
Apps & Services Calendar Text Proc. Currency
GData
Infrastructure Storage Queuing Lock / Coord.
Services Processing Relay Mapreduce
© 2007 Google, Inc. All rights reserved, 5

6. Today’s Line-up
11:00 Building Blocks for True Internet Apps
Jeff Barr, Sr. Web Services Evangelist
13:00 Application Services on the Web:
Dave Carroll, Principal Developer Evangelist
14:30 Reading and Writing Data on the Web
Frank Mantek, Software Engineer
GData
15:45 Middleware in the Cloud
Jonathan Trevor, Pipe Builder
17:00 Panel: Programming the Cloud
© 2007 Google, Inc. All rights reserved, 6

7. Hot… Or Not…
• Mashups • Security
• Demo or die! • Availability
• Copy-paste development • Service-level agreements
• Ubiquitous computing • License agreements
resources • Inside the enterprise
• Computing on demand • Version changes
• Universal connectivity • Scalability
• Open API’s • Debugging
• It’s free! (mostly) • Monitoring & Management
© 2007 Google, Inc. All rights reserved, 7

8. © 2007 Google, Inc. All rights reserved, 8

9. Line-up
• Amazon Web Services:
Building Blocks for True Internet
Applications
Jeff Barr, Sr. Web Services Evangelist
• SalesForce.com:
Application Services on the Web:
Dave Carroll, Principal Developer Evangelist
• Google GData:
Reading and Writing Data on the Web
Frank Mantek, Software Engineer
• Yahoo Pipes:
Middleware in the Cloud
Jonathan Trevor , Pipe Builder
© 2007 Google, Inc. All rights reserved, 9

10. Web 2.0 Architecture Blue Print
• Google Mashup Editor • Yahoo! Pipes • Dapper
• QED Wiki • Snaplogic • Openkapow
• JavaScript Libraries • Microsoft Popfly • Snaplogic
• Microsoft Popfly • IBM Damia • StrikeIron
(not meant to be complete nor a recommendation)
© 2007 Google, Inc. All rights reserved, 10

11. Web 2.0
© 2007 Google, Inc. All rights reserved, 11

12. Programming Models
• Data pipeline
• Declarative within HTML DOM tree
• Query pipeline (IBM Damia)
• Visual programming back in vogue?
• Intuitive
• Scalability concerns
© 2007 Google, Inc. All rights reserved, 12

13. Snags (Small Picture)
• Spec vs. common practice, e.g. RSS GUIDs
• Atom vs. RSS feed formats
• Absence of schema does not mean no data
mapping issues
• XPATH (in various guises)
• Debugging (especially in declarative models)
© 2007 Google, Inc. All rights reserved, 13

14. Snags (Big Picture)
• License agreements
• Inside the enterprise
• Security
• Service-level agreements
• Contract changes
• Scalability
© 2007 Google, Inc. All rights reserved, 14

15. Mashups vs. SOA vs. Web Services vs. EAI
Mashups EAI / SOA
• User-driven • IT driven
• Bottom-up • Top-down
• Quick time to value • Longer time
• Laissez faire • Robust, guarantees
• Design by sample data • Design by contract
• Reuse by copy-paste • Service re-use
• Uses services • Uses services
It's all (still) about integration!
© 2007 Google, Inc. All rights reserved, 15

16. Who's Gregor?
• Distributed systems, enterprise integration,
service-oriented architectures, mashups
• Write code every day. Share knowledge through patterns.
• www.eaipatterns.com
Enterprise Integration Enterprise Best SOA
Integration Patterns Solution Software Experten-
Patterns Microsoft Press Patterns Writing I wissen
Addison-Wesley Microsoft Press (Joel Spolsky) dpunkt Verlag
© 2007 Google, Inc. All rights reserved,
APress
16

17. A Brief History of Time
• Web 1.0
• Static HTML pages, Shopping Sites
• User oriented
• Web 1.5
• Web Services
• Machine oriented
• Web 2.0
• Web as platform, lightweight programming
• RSS and Atom Feeds
• Mashups
• User contributed content, collective intelligence
© 2007 Google, Inc. All rights reserved, 17

18. Resources
• Blog / Tutorial
• www.eaipatterns.com/ramblings.html
• code.google.com/support/bin/topic.py?topic=12044
• Products
• code.google.com/gme
• pipes.yahoo.com
• Market Watch / Directories
• programmableweb.com
• Events
• Mashup Camp
© 2007 Google, Inc. All rights reserved, 18