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A template for the root volume for the instance (for example, an operating system, an application server, and applications) Launch permissions that control which AWS accounts can use the AMI to launch instances; A block device mapping that specifies the volumes to attach to the instance when it's launched
AWS CloudFormation provides a way for users to model an entire AWS infrastructure in a text file, allowing for the infrastructure to be version-controlled, shared, and reused. [8] By using templates, users can create, update, and delete a collection of resources together as a single unit, known as a stack .
A concrete example of the virtual appliances approach to delivering SaaS is the Amazon Elastic Compute Cloud (EC2)—a grid of Xen hypervisor nodes coupled with the availability of pre-packaged virtual appliances in the Amazon Machine Image format. Amazon EC2 reduces the cost-barrier to the point where it becomes feasible to have each customer ...
Amazon EC2 price varies from $2.5 per month for "nano" instance with 1 vCPU and 0.5 GB RAM on board to "xlarge" type of instances with 32 vCPU and 488 GB RAM billed up to $3997.19 per month. The charts above show how Amazon EC2 pricing is compared to similar Cloud Computing services: Microsoft Azure, Google Cloud Platform, Kamatera, and Vultr. [69]
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The AWS CloudFormation template is a JSON data standard to allow cloud application administrators to define a collection of related AWS resources. CloudFormation is a proprietary format from AWS, that is not TOSCA based, and therefore does not bring the promise OASIS TOSCA is targeting. Check this grammar [7] compared to the OASIS TOSCA one . [8]
Amazon introduces Elastic Load Balancing (ELB) (which makes it easy for users to distribute web traffic across Amazon EC2 instances), Auto Scaling (which allows users to scale policies driven by metrics collected by Amazon CloudWatch), and Amazon CloudWatch (for tracking per-instance performance metrics including CPU load). [31] 2009: May 21
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