Worksheet 2

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 Various services provided by AWS as a public and private     Vendor.

 👉AWS Services can be divided into public and private AWS services based on their network accessibility.

   👉    Public services have public space endpoints, private services are accessible only from within a VPC.

Features of EC2 Machine:

  👉Operating system. 

        EC2 supports many OSes, including Linux, Microsoft Windows Server,       CentOS and Debian.

  👉Persistent storage. 

       Amazon's Elastic Block Storage (EBS) service enables block-level storage volumes to be attached to EC2 instances and be used as hard drives. With EBS, it is possible to increase or decrease the amount of storage available to an EC2 instance and attach EBS volumes to more than one instance at the same time.

  👉Elastic IP addresses. 

      Amazon's Elastic IP service lets IP addresses be associated with an instance. Elastic IP addresses can be moved from instance to instance without requiring a network administrator's help. This makes them ideal for use in failover clusters, for load balancing, or for other purposes where there are multiple servers running the same service.

   👉 Amazon CloudWatch.

     This web service allows for the monitoring of AWS cloud services and the applications deployed on AWS. Cloud watch can be used to collect, store and analyze historical and real-time performance data. It can also proactively monitor applications, improve resource use, optimize costs and scale up or down based on changing workloads.

   👉Automated scaling.

     Amazon EC2 auto scaling automatically adds or removes capacity from Amazon EC2 virtual servers in response to application demand. Auto Scaling provides more capacity to handle temporary increases in traffic during a product launch or to increase or decrease capacity based on whether use is above or below certain thresholds.

   👉Bare-metal instances.

     These virtual server consist of the hardware resources, such as a processor, storage and network. They are not virtualized and do not run an OS, reducing their memory footprint, providing extra security and increasing their processing power.

   👉Amazon EC2 Fleet. 

    This service enables the deployment and management of instances as a single virtual server. The Fleet service makes it possible to launch, stop and terminate EC2 instances across EC2 instance types with one action. Amazon EC2  also provides programmatic access to fleet operations using an API. Fleet management can be integrated into existing management tools. With EC2 Fleet, policies can be scaled to automatically adjust the size of a fleet to match the workload.

    👉Pause and resume instances. 

    EC2 instances can be paused and resumed from the same state later on. For example, if an application uses too many resources, it can be paused without incurring charges for instance usage.

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