https://devblogs.microsoft.com/devops/link-unfurling-preview-in-azure-pipelines-app-for-slack/
Link unfurling (preview) in Azure Pipelines app for Slack - Azure DevOps Blog
Jun 19, 2019 - The Azure Pipelines app for Slack provides rich previews of builds and releases when a URL is pasted to the pipeline ( Link unfurling)
app for slacklink unfurlingazure pipelinespreview