how many regions for aws
Right now, AWS has about 10 regions available, three of them in US and the others spread over Europe, Asia, Pacific and South America, but stay assured that more of them will be opened in the future. For many of the AWS services, you will be asked in which region you want to deploy your resources. For example, if you launch an EC2 instance, you will be asked in which region to host it. Each region is totally isolated from the others, and they can talk only via the Internet.