Is flow a layer 1?

Could you please clarify for me if Flow is considered a Layer 1 blockchain? I've been reading about different blockchain architectures and I'm trying to understand the specific role and positioning of Flow within the cryptocurrency ecosystem. If Flow is Layer 1, how does it compare to other Layer 1 solutions like Ethereum or Solana? And if not, what layer does it belong to and how does it interact with Layer 1 blockchains? Thank you for your assistance in clarifying this matter.