Is Aptos Decentralised?

Excuse me, could you please clarify something for me? I've been hearing a lot about Aptos recently and I'm trying to understand its fundamental principles. Could you tell me if Aptos is indeed decentralised? I've read that it's built on some advanced blockchain technology, but I'm still not quite sure how it fits into the decentralised finance landscape. Could you elaborate on this point? I'm particularly interested in understanding how Aptos achieves decentralisation and what this means for its users and the overall ecosystem. Thank you for your time and expertise in this matter.