MPS abbreviated for 'Microsoft Provisioning System' is a service provisioning system automating administrative service management tasks.
Microsoft explains it
here.
The diagram shown in the page clearly shows the significant role of MPS in the Distributed Exchange Hosting Environment.
Once you download the
Microsoft Solution for Hosted Messaging and Collaboration 4.0 you get all the information you need for the deployment.
Documentation also available
here'Deplyment Walkthrough->Build the infrastructure' node includes the steps to be followed for deployment.
You may download the solution
here.
Also dont forget to download the help file
here.
Shahid Mehboob
Lead Software Engineer
www.machsol.com