
<h2>EC2</h2>
<ul>
  <li><code>-a</code>: AMD</li>
  <li><code>-g</code>: ARM</li>
  <li><code>-n</code>: networking (100 Gbps networking)</li>
  <li><code>-e</code>: enhanced storage</li>
  <li><code>-d</code>: Local NVMe-based SSD storage</li>
</ul>
<h2>Nitro System</h2>
<p>Nitro = dedicated hardware + lightweight hypervisor</p>
<p>Hypervisor is very thin becauses functions (network, storage and management) are <strong>offloaded</strong> to dedicated hardware, so CPU can be used for more important computing jobs. Thanks to the ASIC (Application-specific integrated circuit) from Annapurna Labs, a company that Amazon acquired.</p>
<p>Nitro Hypervisor: built on KVM, but does not include general purpose operating system components.</p>
<h2>VPC by default</h2>
<p>Now aws supports only EC2-VPC: you have a default VPC in each AWS Region.</p>
<p>Cloud WAN (wide area network) can be used to connect multiple VPCs in different regions.</p>
<h2>S3 Compatible API</h2>
<p>S3 is so successful that many products / services provide S3 compatible APIs. E.g. NetApp's StorageGrid, Backblaze, MinIO, etc.</p>


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