With the release of Exchange 2010 SP1, we introduced the /hosting mode switch – a feature which deploys Exchange using an Active Directory structure that affords complete separation between tenant ...
Updated Jul 01, 2019
Version 2.0
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@ JT - we understand it will be hard moving to a new forest, but we will be providing detailed instructions and scripts to help with that process should you choose that path. You can stay with /hosting for 2010 and move in the future though, if what you have is working and provides the features you need, maybe staying with it for now is the right course of action.
@ Qaiser - SP2 is later this year, and as previously mentioned, it does not provide a multi-tenant solution out of the box. If you have already deployed SP1 and managed to configure it to appear multi-tenant, you will need to either go with an approved control panel vendor solution, or convert your solution to follow the guidelines we will publish if you want to get support.
@ Jatin - many of the skills you learned will be useful no matter what version of Exchange you go with. In fact having a good understanding of service plans and the like would be very useful if you choose Enterprise and have to effectively create service plans from scratch. If you know what a service plan contains, you can script a bunch of setting that amounts to a service plan quite effectively.