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Amazon Virtual Private Cloud (VPC) is a commercial cloud computing service that provides a virtual private cloud, by provisioning a logically isolated section of Amazon Web Services (AWS) Cloud. [1] Enterprise customers can access the Amazon Elastic Compute Cloud (EC2) over an IPsec based virtual private network .
The isolation between one VPC user and all other users of the same cloud (other VPC users as well as other public cloud users) is achieved normally through allocation of a private IP subnet and a virtual communication construct (such as a VLAN or a set of encrypted communication channels) per user.
Amazon does not charge for the bandwidth for communications between EC2 instances and S3 storage "in the same region." Accessing S3 data stored in a different region (for example, data stored in Europe from a US East Coast EC2 instance) will be billed at Amazon's normal rates. S3-based storage is priced per gigabyte per month.
The file format of the virtual appliance is the concern of the cloud provider and usually not relevant to the cloud user even though the cloud user may be the owner of the virtual appliance. However, challenges may arise with the transfer of virtual appliance ownership or transfer of virtual appliances between cloud data centers.
This resulted in some impaired EC2 instances and degraded performance for some EBS volumes in the affected Availability Zone. Power was restored at 3:22 pm PDT. [294] 2019: August 23: Outage: A number of EC2 servers in the Tokyo region shut down due to overheating at 12:36 pm local time, due to a failure in the datacenter control and cooling ...
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Software Linux FreeBSD Windows Bare Metal AppScale? ? ? Cloud Foundry: Yes No Yes Yes Cloud.com / CloudStack : Yes No Yes Yes Eucalyptus: Yes No No Yes [41]: Flexiant Limited
Cloud services are considered "public" when they are delivered over the public Internet, and they may be offered as a paid subscription, or free of charge. [58] Architecturally, there are few differences between public- and private-cloud services, but security concerns increase substantially when services (applications, storage, and other ...