As a junior Data Scientist in a consulting company, you're involved in multiple ML projects across various industries. Your current project involves developing a predictive model for a retail client to forecast inventory demands. The client's data is vast, unstructured, and stored across multiple sources. Your task includes efficiently collecting, cleaning, and transforming this data into a structured format suitable for model training. Given the project's tight deadline and the need for scalability, you're evaluating Google-recommended services that offer automatic, scalable procedures for data transformation prior to training. Which three services does Google recommend for this purpose, considering the need for handling large-scale, unstructured data efficiently? (Choose three)