Twitter conducted an unexpected round of layoffs this weekend as the company struggles with plunging revenue and aggressive cost-cutting under CEO Elon Musk. The Information first reported on the layoffs, saying the company let go of at least 50 employees on Saturday across different departments, including engineers who help keep the social network running. The layoffs also included “hardcore Musk loyalists,” tweeted Zoë Schiffer, who covers the company closely for Platformer. She added that the layoffs included “a ton of surprises.” For instance, she tweeted, among the laid off was Esther Crawford, chief executive of Twitter Payments. In early November,...