What is Machine Learning Studio (classic)?


Customers currently using or evaluating Machine Learning Studio (classic) are encouraged to try Azure Machine Learning designer (preview), which provides drag-n-drop ML modules plus scalability, version control, and enterprise security.

Microsoft Azure Machine Learning Studio (classic) is a collaborative, drag-and-drop tool you can use to build, test, and deploy predictive analytics solutions on your data. The classic version of Machine Learning Studio publishes models as web services that can easily be consumed by custom apps or BI tools such as Excel.

Machine Learning Studio (classic) is where data science, predictive analytics, cloud resources, and your data meet.

The Machine Learning Studio (classic) interactive workspace

To develop a predictive analysis model, you typically use data from one or more sources, transform, and analyze that data through various data manipulation and statistical functions, and generate a set of results. Developing a model like this is an iterative process. As you modify the various functions and their parameters, your results converge until you are satisfied that you have a trained, effective model.

The classic version of Azure Machine Learning Studio gives you an interactive, visual workspace to easily build, test, and iterate on a predictive analysis model. You drag-and-drop datasets and analysis modules onto an interactive canvas, connecting them together to form an experiment, which you run in Machine Learning Studio (classic). To iterate on your model design, you edit the experiment, save a copy if desired, and run it again. When you're ready, you can convert your training experiment to a predictive experiment, and then publish it as a web service so that your model can be accessed by others.

There is no programming required, visually connect datasets and modules to construct your predictive analysis model.

Azure Machine Learning Studio diagram: Create experiments, read data for many sources, write scored data, write models.

How does Machine Learning Studio (classic) differ from Azure Machine Learning?

Azure Machine Learning provides both SDKs -and- the Azure Machine Learning designer (preview), to quickly prep data, train and deploy machine learning models. The designer provides a similar drag-and-drop experience to Studio (classic). However, unlike the proprietary compute platform of Studio (classic), the designer uses your own compute resources and is fully integrated into Azure Machine Learning.

Here is a quick comparison:

Machine Learning Studio (classic) Azure Machine Learning
Drag and drop interface Yes Yes - Azure Machine Learning designer (preview)
Experiment Scalable (10-GB training data limit) Scale with compute target
Modules for drag-and-drop interface Many Initial set of popular modules
Training compute targets Proprietary compute target, CPU support only Supports Azure Machine Learning compute (GPU or CPU) and Notebook VMs.
(Other computes supported in SDK)
Inferencing compute targets Proprietary web service format, not customizable Azure Kubernetes Service and AML Compute
(Other computes supported in SDK)
ML Pipeline Not supported Pipelines supported
MLOps Basic model management and deployment Configurable deployment - model and pipeline versioning and tracking
Model format Proprietary format, Studio only Standard format depending on training job type
Automated model training and hyperparameter tuning No Not yet in the designer
(Supported in the SDK and workspace landing page)

Try out the designer with Tutorial: Predict automobile price with the designer


Models created in Studio (classic) can't be deployed or managed by Azure Machine Learning. However, models created and deployed in the designer can be managed through the Azure Machine Learning workspace.

Download the Machine Learning Studio (classic) overview diagram

Download the Microsoft Azure Machine Learning Studio (classic) Capabilities Overview diagram and get a high-level view of the capabilities of Machine Learning Studio (classic). To keep it nearby, you can print the diagram in tabloid size (11 x 17 in.).

Download the diagram here: Microsoft Azure Machine Learning Studio (classic) Capabilities Overview Microsoft Azure Machine Learning Studio (classic) Capabilities Overview

Components of a Studio (classic) experiment

An experiment consists of datasets that provide data to analytical modules, which you connect together to construct a predictive analysis model. Specifically, a valid experiment has these characteristics:

  • The experiment has at least one dataset and one module
  • Datasets may be connected only to modules
  • Modules may be connected to either datasets or other modules
  • All input ports for modules must have some connection to the data flow
  • All required parameters for each module must be set

You can create an experiment from scratch, or you can use an existing sample experiment as a template. For more information, see Copy example experiments to create new machine learning experiments.

For an example of creating an experiment, see Create a simple experiment in Azure Machine Learning Studio (classic).

For a more complete walkthrough of creating a predictive analytics solution, see Develop a predictive solution with Azure Machine Learning Studio (classic).


A dataset is data that has been uploaded to Machine Learning Studio (classic) so that it can be used in the modeling process. A number of sample datasets are included with Machine Learning Studio (classic) for you to experiment with, and you can upload more datasets as you need them. Here are some examples of included datasets:

  • MPG data for various automobiles - Miles per gallon (MPG) values for automobiles identified by number of cylinders, horsepower, etc.
  • Breast cancer data - Breast cancer diagnosis data.
  • Forest fires data - Forest fire sizes in northeast Portugal.

As you build an experiment, you can choose from the list of datasets available to the left of the canvas.

For a list of sample datasets included in Machine Learning Studio (classic), see Use the sample data sets in Azure Machine Learning Studio (classic).


A module is an algorithm that you can perform on your data. The classic version of Machine Learning Studio has a number of modules ranging from data ingress functions to training, scoring, and validation processes. Here are some examples of included modules:

As you build an experiment, you can choose from the list of modules available to the left of the canvas.

A module may have a set of parameters that you can use to configure the module's internal algorithms. When you select a module on the canvas, the module's parameters are displayed in the Properties pane to the right of the canvas. You can modify the parameters in that pane to tune your model.

For some help navigating through the large library of machine learning algorithms available, see How to choose algorithms for Microsoft Azure Machine Learning Studio (classic).

Deploying a predictive analytics web service

Once your predictive analytics model is ready, you can deploy it as a web service right from Machine Learning Studio (classic). For more information on this process, see Deploy an Azure Machine Learning web service.

Next steps

You can learn the basics of predictive analytics and machine learning using a step-by-step quickstart and by building on samples.