Upward growth is iffy at best - whatever is said in the interview process about a promotion timeline, double it (unless you're the greatest SDR ever). Plus, Dynatrace AE's selling to SMBs is a horribly difficult task, as the product & pricing model fits best at the enterprise level, and territories are incredibly watered down. I left for this reason, and I personally believe the grass is greener outside of the SDR role.