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Well, now you know why and how we use Slack. Next, go ahead and sign up there https://the-asf.slack.com/signup (use, https://s.apache.org/slack-invite if you don't have "@apache.org" account).
Ignite community uses Slack account that belongs to ASF. All ignite channels, and topics are named as "ignite-{topic}". There is a generic topic named "ignite" for quick chatting among contributors on Ignite matters. Before creating a new topic look through existing ones, there already might be the one that suits your needs.
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