Verizon Communications Inc. on Monday announced plans to buy Yahoo Inc.’s Web assets for $4.83 billion in cash, ending a drawn-out auction process for the beleaguered internet company.

The price tag, which includes Yahoo’s US:YHOO core internet business and some real estate, is a remarkable fall for the Silicon Valley web pioneer that once had a market capitalization of more than $125 billion at the height of the dot-com boom.