1. How to Build Services Right
Building the SOA City
How to Build Services Right
Services are the commodities that are traded in the SOA City market places!
The number and natures of services in a SOA are unlimited; the more services you have the better your SOA will behave and the more attractive the SOA community will be. There simply need to be a critical mass. The question is therefore not which services to build (since this is dictated by the business) or how they need to be built: but following some guidelines may make the work more efficient in total.
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2. Doing the things right is management.
Peter Drucker:
Doing the things right is management.
Doing the right things. Is leadership

3. … since we speak of a market place
Building the SOA City
… since we speak of a market place
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4. SOA is a Marketplace of Service
Building the SOA City
SOA is a Marketplace of Service
SOA Market
Front-end
Services
Abst-raction
Persis- tence
Virtua-lization
Security & Safety
Net-work
Hard-ware
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5. Services, Services … Law Police Justice Service directories
Building the SOA City
Services, Services …
Public Services Official Services Private Services
Service directories
Law Police Justice
In a community you find many types of services: there are the Public Services, those that are consumed by the wide majority of the citizens, like streets, electricity and water; there are Official Services like the Townhall and the Police, that are exclusively delivered by the authorities and there are many private services. In order to find the services you may consult directories, obviously a service by itself. Since tehre may be contention and dispute about the rules how servcies may be used or paid for, you need code of conducts, justice to decide in case th eparties cannot agree and a police that looks after the order.
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6. Services, Services … … and how it looks like in SOA City
Building the SOA City
Services, Services …
… and how it looks like in SOA City
OS Security Data Storage Presentation
Service directories Google UDDI
Rules Watchdog Council
In a SOA you find a similar constellation. The services are the many programs that you can use. Public services correspond to what the operating system has to offer.
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7. What the OS Does for You Cares for printing Display texts in WYSIWYG
Building the SOA City
What the OS Does for You
Cares for printing
Display texts in WYSIWYG
Stores and reads files and databases
Connects to networks and internet
Takes care of multitasking
Checks your identity and login
… and many more
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8. Building the SOA City
The SOA Iteration
Implementing a SOA is a fairly iterative process. You start with building a habitat for existing services and improve the services from there.
Building a SOA is a never ending evolutionary iteration. Hen or egg, egg or hen: you shall not know which came first. Computers are part of our live and so are the services delivered by nowadays software. So we shall choose some of the services that we like most and set up a nice habitat for our favourites to be able to work better with them and allow more people to benefit from them.
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9. The SOA Iteration You already have services
Building the SOA City
The SOA Iteration
You already have services
Identify them
Find ways to improve the infrastructure
E.g. add middleware, unify protocols
Add new services or consolidate services
The iteration is simple and basically it does not matter in which moment of the improvement cycle you step in. You want to start with an inventory of the services that you already have.
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10.  Improve infra-structure
Building the SOA City
The SOA Iteration
Identify, add assistance, add better service
You already have services
 Identify Services
 Improve infra-structure
 Add new services
Consolidate Services
Get an inventory of services
No matter where you start
The iteration is simple and basically it does not matter in which moment of the improvement cycle you step in. You want to start with an inventory of the services that you already have. Then you see if there is a way to improve the infrastructure to make the execution of the services more easy.
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11. The SOA Iteration 1st Generation Wooden Hut  Many wooden huts  Build
Building the SOA City
The SOA Iteration
1st Generation
Wooden Hut
 Many wooden huts
 Build
solid roads fountains
 Build stone houses
In the real world it is just the same. Once upon a time you (or your ancestors) live in a small village made from an assembly of tiny, wooden huts.
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12. The SOA Iteration Stone Houses 2nd Generation  Many small stone huts
Building the SOA City
The SOA Iteration
2nd Generation
Stone Houses
 Many small stone huts
 Build
firm streets marts
 Build bigger houses
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13. The SOA Iteration 2nd Generation Stone Houses  Many small stone huts
Building the SOA City
The SOA Iteration
2nd Generation
Stone Houses
 Many small stone huts
 Build
firm streets marts
 Build bigger houses
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14. Services will shape the SOA SOA will shape the look of the services
Building the SOA City
SOA Iteration
Service will shape the SOA
SOA will shape the look of the services
Services will shape the SOA
SOA will shape the look of the services
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15. SOA Basic Services Design Access-ability Security more
Building the SOA City
SOA Basic Services
Frontend
Design
Access-ability
Security
more
Desktop integration
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