[scarface74]

The big 5 tech companies are Apple, Microsoft, Google, Facebook, and Amazon.

Neither Apple nor Microsoft use Java.

Facebook uses PHP, Google uses a lot of languages but mostly C++ for Search. Amazon does seem to use a lot of Java.

[jcdavis]

> Neither Apple nor Microsoft use Java.

From what I understand Apple uses java/scala fairly extensively for backend services.

[cptskippy]

And they also run portions of iCloud on Azure using .NET.

[scarface74]

They run portions on Azure. That doesn't mean they are using .Net. Azure supports more than .Net.