Slack App instead of Webhooks URLs#955

Please consider the below as more of a requirement, not a suggestion, since Slack may discontinue the use of WebHooks at any time.

Taken from the Slack Webhook URL page

Incoming WebHooks
Send data into Slack in real-time.
Please note, this is a legacy custom integration - an outdated way for teams to integrate with Slack. These integrations lack newer features and they will be deprecated and possibly removed in the future. We do not recommend their use. Instead, we suggest that you check out their replacement: Slack apps.