Each subscriber cloud gets its own of EC2 instances, with MySQL database service provided from scalable, multi-tenant MySQL instances.
The service includes a handful of "jumpstart" templates for getting up and running with popular applications and frameworks.
Jumpstart templates require little configuration to get up and running.
I tested PHP Fog with Mediawiki and with Wordpress, both of which were available in template form.
PHP Fog enables users to access the MySQL database associated with their application through phpMyAdmin, the popular Web-based MySQL administration tool.
PHP Fog charges $2 per GB per month for database size beyond an included 20MB capacity.
The service provides for application stats and diagnostic information through a partnership with SaaS-based application performance management vendor New Relic.
PHP Fog service tiers correspond to different Amazon EC2 instance sizes, and are priced per server per month. Pricing is pro-rated per day, so a customer can opt to scale server count up or down as needed, and pay accordingly.