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Service Oriented Architecture Introduction
Andriy Budayhttp://andriybuday.blogspot.com/
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What is SOA?
SOA is for a Business
Why do we need SOA?
Advantages
Services
Building blocks
Architecture concepts
Our way to success with SOA
Further research and discussion
Agenda
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SOA is an architectural style of building software applications that promotes loose coupling between components for their reuse.
What is SOA?
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A paradigm for organizing and utilizing distributed capabilities that may be under the control of different ownership domains. It provides a uniform means to offer, discover, interact with and use capabilities to produce desired effects consistent with measurable preconditions and expectations.
SOA wikipedia definition
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Analyze your BusinessASBASB BLTBLT
HDLHDL
AFTAFT TGITGI FRYFRY
DRWDRWSWGSWG
QYDQYD DLYDLY
BSTBST
WIUWIU
ASBASB
ZISZISXOIXOI CUICUI
RMORMO
DLYDLYXPSXPS
KYFKYF
KFCKFC
WHRWHR
JIAJIA GEXGEX
FQAFQAVUHVUH
HCOHCO
WKDWKD
ECPECP
SKDSKD
MFPMFP
WCPWCP
DKEDKEAJTAJT
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Identify Business Areas
ASBASB BLTBLT
HDLHDL
AFTAFT TGITGI FRYFRY
DRWDRWSWGSWG
QYDQYD DLYDLY
BSTBST
WIUWIU
ASBASB
ZISZISXOIXOI CUICUI
RMORMO
DLYDLYXPSXPS
KYFKYF
KFCKFC
WHRWHR
JIAJIA GEXGEX
FQAFQAVUHVUH
HCOHCO
WKDWKD
ECPECP
SKDSKD
MFPMFP
WCPWCP
DKEDKEAJTAJT
COP
Navigation
Protectors
Alerts
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Mapping to Software
"Network"
COPCOPCOPCOP
Nav.Nav.Nav.Nav.
AlertsAlertsAlertsAlerts
Prot.Prot.Prot.Prot.
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What are advantages?
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Software reuse
Productivity increases
Increased agility
Advantages of service-oriented development
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Better alignment with the business
A better way to sell architecture to the business
Advantages of an SOA strategy
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Self-contained module that performs a predetermined task
Software components that have published contracts/interfaces
Black-box to the consumers
Platform-Independent
Language-Independent
Operating-System-Independent
Interoperable
What is Service
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Why do we need SOA?
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Why do we need SOA?
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Common Understanding
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Loose coupling - Services maintain a relationship that minimizes dependencies and only requires that they maintain an awareness of each other
Service contract - Services adhere to a communications agreement, as defined collectively by one or more service description documents
Service abstraction - Beyond what is described in the service contract, services hide logic from the outside world
SOA Architectural Concepts
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Service reusability - Logic is divided into services with the intention of promoting reuse
Service composability - Collections of services can be coordinated and assembled to form composite services
Service autonomy – Services have control over the logic they encapsulate
SOA Architectural Concepts
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Service optimization – All else equal, high-quality services are generally considered preferable to low-quality ones
Service discoverability - Services are designed to be outwardly descriptive so that they can be found and assessed via available discovery mechanisms
SOA Architectural Concepts
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Could be Web Services (XML, SOAP, WSDL, UDDI)
SOAP, RPC
REST
DCOM
CORBA
DDS
WCF
Whatever you like
Realizing SOA
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How to success in SOA journey?
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SOA = Architecture
Start Small
Grow Organically
Exploit Business Knowledge
Evangelize
Govern
Measure
SOA strategy to succeed
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Create a Strong Service Catalog
Communicate Your Service Catalog
Start Simple
Common Practice
Best Practice
Be Standards Based. Be Smart
Abstract Complexity
Remember Human Element
Technical execution
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Ask your questions!
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My article:
http://andriybuday.blogspot.com/2010/04/service-oriented-architecture.html
Links:http://www.cio.com/article/40941/SOA_Definition_and_Solutions
http://elementallinks.typepad.com/bmichelson/2005/11/infoworld_soa_e.html
http://www.gartner.com/it/content/754400/754413/twelve_common_soa_mistakes.pdf
http://www.soapatterns.org/masterlist_c.php#ch11
Where to go from here?
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