A) SIS integration
B) Auto restoration of any course files
C) Auto restoration of course(s)
D) Wiki/Page version control/rollback
E) Bb course migration tool
F) Unlimited storage
G) Media recording & auto-transcoding tool
H) Native apps for Apple & Android devices
I) Notification framework including automated Text messaging
J) Integrated Google Docs Collaborations
K) Synchronous Conferences (BigBlueButton)
L) Analytics (for Program, Course and Student) *although you could build your own using Canvas' open API
M) Canvas App Center
N) Annual open security audits
O) 99.9% uptime *although it’s been 99.987% uptime in 2014 which equates to 68 minutes of total downtime
P) Automated provisioning of server resources. This is the cloud at work.
Q) Ability to export your courses out to import into self-hosted Canvas or into another LMS if necessary.
R) Hassle free updates without downtime
S) Technical support
T) Implementation services
U) In-page document rendering
V) Canvas Commons open content repository
W) Ongoing support from account management team to ensure your success.
X) Manage feature releases
Y) Test, Beta & Production environments
Z) Automated data push to Test and Beta environments

And if there were a few more letters in the alphabet...

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