Everything you'd like to know about SOA, JBI, ESB and BPEL, but were too afraid to ask

MGJUG - Grupo de usuários Java de Minas Gerais, Brasil. – 33 slades. http://www.mgjug.com.br/.Contents:
Definitions.
When things go bad.
The Accidental Architecture.
Collateral damage.
SOA at Corporate level.
SOA So what it's all about?
SOA Layers.
Services.
But what is a Service?
Services does not depend on their implementation.
WebServices Explained.
The Service Mess.
Orchestration.
Choreography.
Introducing Enterprise Service.
ESB Definition.
ESB and Application Servers.
ESB Example.
Reliable messaging.
Introducing JBI.
JBI Architecture.
ServiceMix.
How does BPEL and ESB fit together.
Beware the dark side.