Email, security, and storage are the most popular cloud services. 62% of
the organizations that use cloud computing are using a cloud-based email
application. Email services are most popular with mid-size businesses (250-1000
employees) with 70% of organizations this size using the cloud for email.
Smaller businesses (under 250 employees) are most likely to use the cloud for
security services, and larger enterprises (over 1000 employees) most likely to
opt for cloud storage services.