ECS Is a Highly Flexible Service

Multiple Choice

ECS is a highly flexible service. It can be used independently as a simple web server, or used with other Alibaba Cloud products, such as OSS and CDN, to provide advanced solutions. ECS can be used in applications such as: ______________. (Choose four.)

A) Official corporate websites
B) large-traffic apps
C) Databases
D) simple web applications
E) no limited online storage