Silicon Valley Bank's $($SVB$)$ Failure

$1.$ What caused the failure of SVB$?$

$2.$ What impact did the management of the bank have on the failure of the SVB$?$

$3.$ What impact does this failure have on the business world?

$4.$ Why are the big banks $($JP Morgan, CITI Bank, Bank of America$)$ not impacted by the failure of SVB$?$

$5.$ What other major failure can you think of that is similar to SVB