AWS Certified Cloud Practitioner (#113)

In which scenario should Amazon EC2 Spot Instances be used?

A company wants to move its main website to AWS from an on-premises web server.
A company has a number of application services whose Service Level Agreement (SLA) requires 99.999% uptime.
A company’s heavily used legacy database is currently running on-premises.
A company has a number of infrequent, interruptible jobs that are currently using On-Demand Instances.