Lew Tucker, Ph'D'

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Web Services and the Future of the Net
Lew Tucker, Ph.D. VP, Internet Services lew.tucker
_at_sun.com
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Generations of the Net
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Complexity and cost comes to the web
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Web Services

• Web services are internet accessible functions
  that may be combined dynamically to perform a
  variety of different services on the behalf of
  users or other systems.
• Services may or may not have a visible
  user-interface.
• Generally defined by XML messaging (SOAP),
  discovery (UDDI), ebXML, and web protocols such
  as HTTP.

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Services Built From Components

• A web service may composed of other
• services

Portfolio can be an application, a portal
channel, or a web service itself
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How Web Services Address Complexity and
Increasing Costs

• Allows development of componentized services
• Lowers integration costs standard interfaces
• Leverages component re-use
• Loosely-coupled systems yield better fault
  tolerance
• Formally specified systems allow automation to
  drive integration cost to zero
• choking off complexity
  just in time

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Three Ways to Think About Services

• Simple componetized way to build new web
  applications focus on the consumer
• System-to-system, transactional services for
  businesses focus on authentication, security,
  etc.
• Standardized way to integrate internal systems
  within the enterprise focus on reducing costs

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How Will Services Evolve What Are The
Opportunities for Software Companies?

• Follow the example of the web
• Universal access through browser
• Easy-to-use publishing tools
• Standards replaced proprietary solutions
• Equivalence in web services
• Universal application-to-application access
• Easy-to-use service creation tools
• Standards replace proprietary solutions

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Open Questions....

• Will web services yield the productivity savings
  we all need?
• What changes in secure transport, authentication,
  and identity management will be required?
• Will high-level business-oriented modeling
  tools permit service creation without IT
  involvement?
• Where will the growth happen, business-to-business
  , consumer, or internal system-to-system?

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Conclusions

• Growth of XML Web Services is a natural evolution
  of network computing
• XML data traffic will in large part dominate
  the the net
• Systems, large and small will become connected
• Application design will be fundamentally altered
  by web services