var messageCard = new MicrosoftTeamsMessageCard {
    summary = "Cake posted message using Cake.MicrosoftTeams",
    title ="Cake Microsoft Teams",
    sections = new []{
        new MicrosoftTeamsMessageSection{
            activityTitle = "Cake posted message",
            activitySubtitle = "using Cake.MicrosoftTeams",
            activityText = "Here is the runtime Information",
            activityImage = "https://raw.githubusercontent.com/cake-build/graphics/master/png/cake-small.png",
            facts = new [] {
                new MicrosoftTeamsMessageFacts { name ="CakeVersion", value = Context.Environment.Runtime.CakeVersion.ToString() },
                new MicrosoftTeamsMessageFacts { name ="TargetFramework", value = Context.Environment.Runtime.TargetFramework.ToString() },
                new MicrosoftTeamsMessageFacts { name ="IsCoreClr", value = Context.Environment.Runtime.IsCoreClr.ToString() }
            },
        }
    },
    potentialAction = new [] { 
        new MicrosoftTeamsMessagePotentialAction {
            name = "View in Trello",
            target = new []{"https://trello.com/c/1101/"}
        }
    }
 };

 MicrosoftTeamsPostMessage(messageCard,
    new MicrosoftTeamsSettings {
        IncomingWebhookUrl = EnvironmentVariable("MicrosoftTeamsWebHook")
    });