Google is making the biggest acquisition in its history. The company's parent company Alphabet is buying Wiz, the cloud security startup, for $32 billion

Alphabet will buy fast-growing startup Wiz for about $32 billion in its biggest deal ever, the Google parent said Tuesday, as it doubles down on cybersecurity to sharpen its edge in the cloud-computing race against Amazon.

Alphabet's acquisition of Wiz underscores its ambition to lead in cloud security. Check out why I rate GOOG stock a buy.