"Annual recurring revenue (ARR) is a key metric used by subscription and software-as-a-service (SaaS) businesses to measure the predictable and recurring revenue expected over a 12-month period"
They are expecting to bring 500 million this year in revenue. Thats what I said, and that's what you said. Not 500 million for the first half of the year and another 500 million the rest of the year. 500 million total.
Perhaps you should do a slightly less cursory search.