difference bw S3 and EBS

[NadeemQazi]

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.

[MarwaMabrouk]

When you create an instance in Amazon and run it, it will include EBS volumes. Any data you add to that instance disk will be using EBS.

S3 is an additional storage service from Amazon, it's accessible through other tools. So as a rule of thumb, what looks like a local drive is EBS. Cloud storage accessed remotely through special tools is S3.

[LucaPalli]

Internally Amazon use S3 as base storage service for the ESB service, but it is not visible to the users.