If the questions relates to privacy of data - you can refer to our
replies on a similar thread. In short, the Data Policy (for each
visualization) specifies how the visualization uses the data. Most
visualizations to not load the data anywhere except to the local
browser. Some Google visualizations that are rendered as images do
load the data, but only to render an image and data is always flushed
later on. You can choose to use only client-side visualizations.
The google.load() call is to get the latest version of the
Visualization itself, not to load or store the data being visualized.
As far as enterprise use cases are concerned, I can share with you
that we have heard this request from a lot of people, including large
organizations who want to use the Visualization API. We are certainly
thinking about this. When we have more to share we will do so as soon
as possible.