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We are designing some web services to communicate data updates between applications that we make. It's all about interoperability.
My lead dev. is thinking about making a pair of web services that "talk" to each other. The app that originates a data change could access a web service of the consuming app that simply says "I have data for you." The consuming app then uses SOAP/WebService protocols to ask for the data the the provider has indicated was available in the preceding exchange.
Is this just a simplistic way of doing something that is already a standard?
What would we call that process?
What terms should he be researching to learn more about how this is done nowadays?
Thank you
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I m a fresher but i think it is better to use messaging services like MSMQ or JMS depending on the technology used. 
Regards,
Raj Champaneriya
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Bytescream wrote: It's all about interoperability.
And that is all about design and process control. Not technology.
Bytescream wrote: could access a web service of the consuming app that simply says "I have data
for you."
What happens if the other app isn't there - the one that is supposed to receive the data available message>
What happens if the other app receives the data available but then goes down before it can get the data?
What happens if the other app receives the data available message but just ignores it - it never tries to get the other data (yes that is a bug but is still something that the the orgination app must consider.)
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