Is Vara on Polkadot?

Excuse me, could you please clarify for me if Vara is currently available or integrated on the Polkadot blockchain network? I'm interested in understanding the current status of Vara's relationship with Polkadot, and whether or not users can currently interact with Vara through the Polkadot ecosystem. If Vara is indeed on Polkadot, could you provide some additional details about the integration and what benefits it may offer to users? Thank you for your assistance.