In 2003, I first heard about digital banks like Up and Chime and how they were offering so much better interest than all the brick-and-mortar banks.
since online banks don't have to pay the fees for renting out office space and paying tellers to work the bank, then this all translates into their ability to offer you higher interest on your savings.
Over the last 10 years, as the Fed has dropped Prime interest rates to near zero, it makes reducing expenses even that much more important both to you and the bank's ability to offer competitive rates.
Your online banks offer the same FDIC security that your traditional banks offer.