Web Services - communicating between apps

I would like to educate myself on web services, for the ability to define a possible solution or stategy to communicate between multiple applications on different servers located within different locations. We need the ability to exchange data between different databases, seemless logins etc Does anyone know a good tutorial or book to read. I'm waaaaaay out of my league on this one :) ThanksTry reading MS book for exam 70-310. Gives a good grounding on WebServices and the framework its built on. .Net Remoting.

The sort of B2B process you talk about is possible. Although I am pretty sure you would need to use an agreed schema of some sort with your partners.

The book should also review security for web services.

Beleive me the majority of it is way out of my head and I have passed the exam lol. Amazing what you forget when you dont use what you learn. I dont really have any call for Web Services. Although at least its given me a good grounding. Would just have to go back to my study notes if I needed to do something again.