The document discusses Microsoft Server 2012, which was released in 2012. It had four editions - DataCenter, Standard, Essentials and Foundation. DataCenter and Standard editions had higher hardware requirements and more features than Essentials and Foundation editions, which had lower hardware requirements and were aimed at small and medium businesses. Overall Server 2012 improved virtualization, storage and availability capabilities over previous versions.

1. 2012
10.3%
40,000
85%

2. 23.5%
2012
(Microsoft Server 2012) 14
20%
"

3. 75%
"
2012
4 DataCenter, Standard,
Essentials Foundation
2012
DataCenter Standard
1 2
Essentials Foundation

4. 1 1
. . .6 2 19