Certified EOS Expert is a skilled individual who is well versed in EOS principles and concepts like what is EOS, how EOS works, explaining DPOS and TAPOS mining algorithm, how EOS claims to make millions of transactions per second, how EOS is different than other blockchains, etc.
EOS is well sought-after platform because it is straight away challenging the norms of standard blockchain like Ethereum by claiming to be able to make millions of transactions per second, unlike Ethereum that can make 20 transactions or Bitcoin which can do only 3-4 transactions per second.
