I am a little bit confused with the way EC2 pricing works with reserved instances. It is my understanding that EC2 reserved instances are just a way to price instances.
For my application I need to randomly create a new instance and terminate the current, but that has to happen with no major delays as sometimes happen with spot instances where you have to bid the right price or wait for the price to drop to your level.
In the case of purchasing a reserved instance that would mean there will always be an instance for me?
Any clarification on this will be appreciated. Thanks
Unless there is some other system issue. On demand instances always launch. A reservation is simply a billing feature and will bill a matching on demand instance at the reservation price.