Horizontal scaling in the Cloud is the way to adapt resources to load of systems. The Cloud allows users to scale virtually indefinitely, or enough for their needs.
This way the number of servers follows trend of requests, and TCO (Total Cost of Owneship) of IT infrastructure can be reduced. Nonetheless companies can avoid dealing with capacity planning and pre-provisioning issues.
This talk will show how to use Python and Rackspace/OpenStack API and SDK to implement an event-based scaling solution (software released under the open-source Apache License: stay tuned).