Can you discuss the difference between instance-backed AMIs and EBS-backed AMIs, and the advantages and disadvantages of each?
Instance-backed AMIs utilize instance store volumes for root and additional storage, while EBS-backed AMIs use Amazon Elastic Block Store (EBS) volumes. Instance-backed instances are ephemeral; data is lost upon stopping or terminating. EBS-backed instances retain data even after termination.
Advantages of instance-backed AMIs include faster boot times and lower costs. However, they have limited storage capacity, no snapshot capability, and potential data loss. EBS-backed AMIs offer persistent storage, easy snapshots, increased durability, and the ability to resize volumes. Their disadvantages include slower boot times and higher costs.
