Ann: Strong Financial Results for Q3 of 2018 Appendix 4C, page-55

If you've only ever heard of multiples of profits - how do you think Amazon has been valued for the past 20 years - as they have basically never produced any profits - they recycle all gains into business expansion - hence their immense size today

Yes you guessed it - valuations are based on multiples of revenue

Moreover, DTS are scheduled to be at breakeven by March 2019 - so you have a situation of rapidly growing ARR and positive EBITDA