I'd say for large companies(Google, Fb, MSFT, etc), theres no need to send a cover letter. These companies get thousands of applications every single recruiting

I'd say for large companies(Google, Fb, MSFT, etc), theres no need to send a cover letter. These companies get thousands of applications every single recruiting cycle. Is it even possible for HR to review every single cover letter? Anecdotally, I've had many friends get interviews with big companies without sending a cover letter so not having a cover letter probably won't hurt your case. For small companies/startups, a cover letter is probably a good idea though.