[hboon]

Read what 37Signals/Basecamp who has spent 15 years building their (huge) audience on their own site says:

https://m.signalvnoise.com/signal-v-noise-moves-to-medium-c8...

I think the number 1 reason is reach.

[adajos]

Reach is exactly right. Also good for audience building.

That said, I agree with most of the complaints about Medium as well.