How old is AVAX?

Could you please elaborate on the age of AVAX? I'm interested in understanding how long it has been in existence and its journey so far in the cryptocurrency space. Is AVAX a relatively new entrant or has it been around for quite some time? I'm also curious about any significant milestones or developments that AVAX has achieved during its lifespan. Could you provide some insights into its growth and evolution over the years? Thank you in advance for your response.