Is skale layer 2?

Could you please elaborate on whether Skale is considered a Layer 2 solution? In the realm of blockchain and cryptocurrency technology, Layer 2 solutions are often touted as a means to enhance scalability and efficiency on top of existing Layer 1 blockchains. Given the importance of scalability for mass adoption, it's crucial to understand if Skale falls into this category and what unique advantages it might offer. Your insights would be invaluable for those interested in exploring the latest advancements in blockchain scalability.