T2
Lowest cost, geneal purpose
Web servers / Small DBs
G2
Graphics intensive
Video encoding / 3D application streaming
C4
Compute optimized
CPU intensive apps / DBs
P2
Graphics/General purpose GPU
Machine learning / Bitcoin mining
X1
Memory optimized
SAP HANA / Apache Spark
I2
High speed storage
NoSQL, DBs, Data warehousing
D2
Dense storage
Fileservers / Data wrehousing / Hadoop
M4
General purpose
Application servers
R4
Memory optimized
Memory intensive apps / DBs
F1
Field Programmable Gate Array
Hardware acceleration for your code