cesium licence

Hi,

I’m a newbie here.

I’m looking at options for building a product for some of our clients using Cesium but I have been trying to see what and if there are any licence requirement for using Cesium as the platform. I think there was some requirement if using Google Earth. Be great if someone could put me in the right direct.

Thanks

Apache 2 License

https://github.com/AnalyticalGraphicsInc/cesium/blob/master/LICENSE.md