(Reuters) - Alphabet unit Google said on Friday it would invest $3 billion to set up a data center campus in Indiana and expand sites in Virginia.

A boom in artificial intelligence applications has increased the demand for cloud computing, prompting Big Tech firms to expand their data center capacity.

On Thursday, Amazon.com's cloud computing arm committed $11 billion toward new data centers in Indiana and creating 1,000 jobs.

Google will spend $2 billion for the Indiana campus at Fort Wayne, and $1 billion to expand three existing data center campuses in Virginia.

On Friday, the company also announced a $75-million Google AI Opportunity Fund to train Americans on AI skills.

(Reporting by Yuvraj Malik in Bengaluru; Editing by Sriraj Kalluvila)