Today I’m sharing some of the most difficult changes we’ve made in Meta’s history. I’ve decided to reduce the size of our team by about 13% and let more than 11,000 of our talented employees go. We are also taking a number of additional steps to become a leaner and more efficient company by cutting discretionary spending and extending our hiring freeze through Q1.

‘‘If I get through this speech today, it'll be the first time I actually finish something here at Harvard,’’ the Facebook founder said. (He did.)