
60 2.2 Horizontal vs. Vertical Scalability
ing his crush to another teen by SMS. One way or another, we have a rising
generation of individuals that find that electronic communication is natu-
ral. This generation represents the business workers of tomorrow, and grad-
ually, we see an increased usage of email, not always for business purposes,
and preferably on mobile devices. Mobility, a major theme for Exchange
2003 that introduced protocol extensions that enable Windows Mobile
smartphones and personal digital assistants (PDAs) to access an Exchange
mailbox. The use of mobility in Exchange deployments kills any backup
window or downtime that you might ...