When was Axelar released?

Could you please elaborate on the timeline of Axelar's release? I'm interested in understanding when this cryptocurrency project first came into existence and if there were any notable milestones or updates since its inception. Specifically, I'm wondering if there was a public beta release, a mainnet launch, or any significant updates that have shaped the development of Axelar. Knowing these details would help me gain a better understanding of the project's history and evolution.