With over thirty millions of lines of code, Athena is the largest Python-based ecosystem in J.P. Morgan Chase and among the largest in the world. Maintaining consistency and stability while enabling creativity, research, and speed of development are critical for supporting our clients and staying ahead. Can we fit everything from Risk Management, to Pricing, to Machine Learning and Data Science into the same platform? What are the benefits and the drawbacks? We'll discuss the choices we made and the path we see ahead.