Your team of data scientists is leveraging a cloud-based backend system to submit training jobs, which has become increasingly complex to administer due to the variety of frameworks used, including Keras, PyTorch, theano, scikit-learn, and custom libraries. You are considering a managed service to streamline this process. The solution must support all these frameworks, minimize administrative overhead, and scale efficiently with the growing complexity and size of training jobs. Additionally, the solution should integrate well with other machine learning services for a comprehensive workflow. Which of the following options would be the most effective solution? (Choose one correct option)