Chapter 4

Defining a Highly Available Messaging Solution

As you saw in Chapter 1, “Business, Functional, and Technical Requirements,” when eliciting requirements, desired availability is often one of the first topics to be raised. It is important to note that one of your functions as a consultant or implementer is to make the businesses aware that raising the availability of any system has a direct cost implication.

With quality cloud-based solutions, messaging systems are no longer shackled to the limits of on-premises capabilities. Keep cloud-based solutions in mind as a possible fit for some of your highly available messaging solution requirements.

If you have deployed Exchange Online in conjunction with on-premise solutions, and you are running ...

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