Nowadays Artificial Intelligence is being improved very fast, helping people in various areas. Medical imaging and diagnostics is one of them and there are thousands of papers about AI in medicine, including histopathology. However, there are very few successful stories about applications of AI in digital pathology diagnostics. We are going to discuss about the challenges of making practical AI in this subject, about the lessons we have learned and the recent discoveries which will impact the future development of algorithms for digital pathology. Finally, we will talk about the opportunities to bring the algorithms to the doctors that our new web platform, CancerCenter.AI, brings.