Reliability
The DigitalChalk system has redundant and distributed system configurations.  The workload is spread across many servers.  If a single server goes down, the other servers automatically pickup the next request.  DigitalChalk uses advanced virtual server technology to rapidly add and replace servers during high demand periods.  

Redundancy
The DigitalChalk system uses servers across multiple geographic regions.  Each server has backups running in different regions and all data is backed up hourly into multiple region.  

Scalability
DigitalChalk employs active load management monitoring and scaling.  The system can automatically add capacity as needed to react to unexpected load increases.  By using the Amazon cloud computing infrastructure, DigitalChalk can scale to many times maximum forecasted capacity within minutes.