Enterprise Infrastructure

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Enterprise Infrastructure

• Bina Ramamurthy

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Introduction

• Integration of the enterprise relies on an
  enterprise-wide infrastructure to support
  communications and shared services.
• An enterprise infrastructure provides the
  backbone management and communications that link
  the business systems.
• Collection of services and facilities that link
  business systems, management information systems,
  and portals for customers, employees and other
  partners.

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Enterprise Integration Infrastructure
Business System Domain
Decision Support Facilities
Plant Control Systems
Intranet facilities System Management Archiving
Service
Personal computers Security services Meta data
Repository
Messaging service Organization Directory
Knowledge Mgt.
Portals
B2B Messaging
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Intranet Facilities

• The intranet is for providing internal user
  access to applications and for the exchange of
  messages and files between applications.
• Typically contains a number of LANs linked by a
  wide-area-network with firewall and remote access
  facilities.

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Messaging Services

• Sometimes called Message Oriented Middleware
  (MOM) provide communication between Business
  System Domains (BSD) and their applications in a
  store-and-forward, asynchronous mode of
  communication.
• An sender application posts a message to a queue
  for later delivery.
• The receiver application removes the message from
  the queue to process the message.
• Queue guarantees once-only-once delivery.
• Message is ready for delivery only after a
  transaction associated with it has committed.

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Messaging (contd.)

• To provide flexibility and to reduce the number
  of connections between applications a message
  broker service is used.
• An additional capability called
  publish-and-subscribe service allows applications
  to publish the occurrence of an event that other
  applications have subscribed for.
• Messages can be filtered to have a certain
  characteristics before getting forwarded.
• Message transformation is another service
  associated with asynchronous messaging.

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Messaging and XML

• Currently XML is the preferred format for
  messages.
• Transformations can be specified using style
  sheets (XSLT).
• Store and forward also helps realize loose
  coupling requirement of enterprise systems.

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Meta Data Repository

• It is a data dictionary.
• It is the data about the data, systems and
  interfaces.
• Six categories of meta data are
• Database scheme
• Object interface repository
• Message transformation specification
• Data warehouse meta data (historical data for
  mining)
• Knowledge meta data
• XML schema specifications specific to the business

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Portals

• Portals are windows on the enterprise using the
  internet.
• Enterprise portal public interface of the
  enterprise to the outside world.
• Employee portal services and references of
  interest to employees benefits portal
• Retail Portal for conducting business with
  general public.
• Customer service portal for customer relation
  management.

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B2B Portal/exchanges

• Typically for conducting business between
  partners through application to application
  interactions (not human /computer)
• ebXML is a standard developed for interchange of
  documents and protocols to follow.
• It uses secure messaging (https)
• Example Auction framework.

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Summary

• Enterprise infrastructure is a key element in
  achieving
• Integration
• Economies of scale
• Flexibility
• Security

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Introduction

• State the purpose of the discussion
• Identify yourself

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Topics of Discussion

• State the main ideas youll be talking about

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Topic One

• Details about this topic
• Supporting information and examples
• How it relates to your audience

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Topic Two

• Details about this topic
• Supporting information and examples
• How it relates to your audience

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Topic Three

• Details about this topic
• Supporting information and examples
• How it relates to your audience

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Real Life

• Give an example or real life anecdote
• Sympathize with the audiences situation if
  appropriate

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What This Means

• Add a strong statement that summarizes how you
  feel or think about this topic
• Summarize key points you want your audience to
  remember

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Next Steps

• Summarize any actions required of your audience
• Summarize any follow up action items required of
  you