[heifetz]

ehh, the author is a co-founder of Ably, a real time messaging platform, which competes with Slack in some areas.

[wichert]

I'm a happy user of Ably, and I can't think of a single place where it competes with Slack. Can you point out where they are competing?

[matt_oriordan]

Just to confirm, we are not in any way a competitor to Slack, we are a realtime data delivery platform. The article confirms we use Slack ourselves. See www.ably.io/platform for more info.

[CapacitorSet]

It does read somewhat like an advertisement, seeing that it's just four paragraphs (of which one is a tl;dr and one is not relevant to the title) and four pictures followed by an ad for Ably.