Which of the following statements are the best practices of AWS Elastic Compute Cloud $($EC$2)?$

Each correct answer represents a complete solution. Choose all that apply.

This type of question contains radio buttons and checkboxes for selection of options. Use Tab for navigation and Enter or space to select the option.

A

option A

Instances should be launched into a subnet rather than in the EC$2$ Classic.

B

option B

Regular backups should be in place.

C

option C

Metadata should be used to track a user's AWS resources.

D

option D

Critical components should be replicated and deployed across multiple availability zones.