I have created an EC2 instance also have deployed ARCGIS server AMIs and my server is running, when i check the AWS console i can see 4 standard volumes ( 2 attached and 2 detached) . I assume this a default as i just ran Esri provided AMI. I am confused about EBS volume and S3 services of AMazon. for example if upload my application data on ARCGIS server than will it be on EBS volume or on S3. Actuallly I am not clear when i should S3 storage. when i google on S3 IT SAYS it is web service to access data. than should i assume that i access EBS volumes using S3 service.