Back in the day, Smartly.io hired a lot of Flowdock (now defunct chat application, like Slack) employees back in the days, for example my manager. According to my understanding, this lead to flourishing usage of the Flowdock application. One of the, alleged, reasons for this was that those who had both designed and implemented the product were able to guide and educate other employees within Smartly on how to use the application to its fullest.