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As Google plans to graduate the App Engine PaaS from Preview to a full product in the second half of this year, and drop Google App Engine for Business in favor of a single App Engine product, Google also restructured the pricing model.
Google said that App Engine will give all paid users a 99.95 percent uptime SLA, operational and developer support, billing via invoice and new business-focused terms of service. The pricing changes won't take place until later this year, Google said.
According to Google, there will be more restrictive quotas for free apps; paid apps will have 99.95 percent SLAs and cost $9 per app per month in addition to usage fees; and new premier accounts will let companies not pay for individual apps, but use as much as they need with operational support available for $500 per month.
For usage fees, Google will eliminate CPU hours and will charge for the number of instances based on "instance-hours," or one instance running for one hour. Instance-hours can be pay-as-you-go for eight cents per instance hour, or users can commit to a minimum number of instance hours over the course of the week and pay five cents per reserved instance hour.
Meanwhile, all APIs, which are currently charged as CPU hours, will instead be charged per operation.
And for Datastore storage, Google will drop the price of High Replication Datastore from 45 cents per gigabit per month to 24 cents per gigabit per month. Meanwhile, Master/Slave Datastore storage will increase to 24 centers per gigabit per month when App Engine leaves Preview.