Is beam a layer 1?

Could you please clarify for me if Beam is considered a layer 1? I've heard some discussions about it, but I'm still not entirely sure about its classification. Could you provide a concise explanation of what layer 1 typically refers to in the context of blockchain technology, and then specifically address whether Beam falls into this category? I'm interested in understanding its role and position within the broader cryptocurrency ecosystem. Thank you in advance for your assistance.