The evolution of the Amazon Web Services cloud has proceeded at a steady pace since 2006, and while a number of companies have built up cloud businesses and close the gaps, Amazon keeps moving ahead. Two recent tweaks to the Amazon cloud make it that more useful, and therefore more sticky for the applications running upon it. …
Elastic IP Address allocation
There's a lot made of the fact that Elastic IP Addresses (EIPAs) are released when an instance stops, dies, or is summarily killed off, but it's not that big a deal. If you're a heavy user, use CloudFormation to launch your instances, and include an EIPA allocation in the launch script. If you're a light (read: hobby or small business) user, create your own Amazon Machine Image (AMI) from a snapshot - it's pretty easy - of an EC2 instance that you've set to assign itself a named EIPA as it starts.
It's good practice to create your own AMIs (with auto-recovery built in) anyway, so that, if/when your EC2 instance terminates for whatever reason, it can be respawned automatically with no human intervention and little loss of service.
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