TensorFlow is a free and open-source platform for machine learning that has been developed by Google. Tensor Flow has some features like image recognition, voice recognition, and so on. GDG (Google Developer Group), together with ISTTS, conducted TensorFlow Dev Summit 2019 Extended for introducing this technology to Surabaya community. This event was held on March 15, 2019 at 18:00-21:00. In this event participants were invited directly to try TensorFlow technology which is now widely used by large companies.