Is Vertex AI part of Google?

Could you please clarify for me whether Vertex AI is indeed an integral component of Google's technology portfolio? I'm curious to understand if it operates under Google's umbrella, leveraging the company's vast resources and expertise in artificial intelligence and machine learning. Is there a definitive statement or documentation that confirms Vertex AI's status as a Google-owned and operated service? I'm looking to gain a clear understanding of its relationship with Google and how it fits into the broader tech landscape.