It’s often the first problem you solve when moving to the cloud: Your enterprise is using dozens, sometime hundreds, of different heterogenous databases, and now you need to bind them together into hundreds of virtual views of the data in the cloud.

What’s good about this is that you don’t need to migrate to new databases, or even move the data from where it’s being currently hosted in the cloud. After all, there may be applications that are dependent on that data, and the last thing you want to do is to store redundant data.

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So, you federate. That gives you logical centralization of data without having to change where the data is physically stored, cloud or not.

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