What makes Axelar different from comparable cross-chain networks?

Could you elaborate on what sets Axelar apart from other cross-chain networks in the market? Are there any specific technological advancements or innovative features that make it stand out? What challenges does it aim to address that other networks might not be able to? How does its interoperability solution compare to existing solutions, and how does it ensure security and scalability? I'm curious to know what makes Axelar unique in the ever-evolving landscape of cross-chain communication.