"It's imperative that we remain available around the world, and today we stumbled," Rawashdeh wrote. "For that we offer our most sincere apologies and hope you'll be able to breathe easier now."

Rawashdeh wrote that Twitter has had some of its highest average marks for reliability and stability over the past six months, experiencing as little as 20 seconds of downtime in a 24-hour period.

"Not today though," Rawashdeh wrote.