Oracle VM VirtualBox Google App Engine Google App Engine is free up to a certain level of consumed resources. Fees are charged for additional storage, bandwidth, or instance hours required by the application.[3] It was first released as a preview version in April 2008, and came out of preview in September 2011. Supported features/restrictions[edit] Runtimes and framework[edit] Reliability and Support[edit] All billed High-Replication Datastore App Engine applications have a 99.95% uptime SLA.[15] App Engine is designed in such a way that it can sustain multiple datacenter outages without any downtime. Paid support from Google engineers is offered as part of Premier Accounts.[17] Free support is offered in the App Engine Groups and Stack Overflow, however assistance by a Google staff member is not guaranteed. Bulk downloading[edit] Restrictions[edit] Major differences[edit] Differences with other application hosting[edit] Differences between SQL and GQL[edit] Portability concerns[edit] Backends[edit] Google Cloud SQL[edit] See also[edit]
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