Amazon EC2

• Hibernation:

  • You are not charged for Hibernated Instance usage. you pay only for the EBS volumes and Elastic IP Addresses attached to it. there are no other hourly charges (just like any other stopped instance)

  • To preserve contents of the instance's memory whenever the instance is unavailable.

  • The EBS root volume is restored to its previous state

  • The RAM contents are reloaded

• Spot Instances

  • cost-effective choice if,

    • your applications can be interrupted

    • Ex: data analysis, batch jobs, background processing

• Placement groups

  • There is no charge for creating a placement group.

  • Cluster

    • Packs instances close together inside an Availability Zone

    • low-latency and high network performance necessary for tightly-coupled node-to-node communication

    • High Performance Computing HPC applications

  • Partition

    • Groups of instances in one partition do not share the underlying hardware with groups of instances in different partitions

    • used by large distributed and replicated workloads, such as Hadoop, Cassandra, and Kafka.

  • Spread

Strictly places a small group of instances across distinct underlying hardware to reduce correlated failures