Studio is a web application that creative agencies can use to test, share, and deliver rich media creatives.

Creative Studio is used for DCO.
It has two parts: a software development kit (SDK) and a web app:
Developer documentationStudio SDK
The Studio SDK is a code library includes the Enabler, the core library that helps you add creative features and measure interactions with your ads.
When you build creatives with Google Web Designer the SDK is automatically included, so you don't need to add any extra code.
If you prefer to use other HTML editors, you can add the Enabler and use the API (application programming interface) to load files and measure performance.
Studio web app
After you've built your creatives, upload them to Studio. There, you can preview them, test that they work properly, publish them for quality assurance, and share them with your clients for review. When they're approved, send them to your client's ad server for trafficking.
To work correctly, the creatives you build with Studio must be served through Display & Video 360, Campaign Manager 360, or Google Ad Manager.
Looker Studio, formerly Google Data Studio, is an online tool for converting data into customizable, informative reports and dashboards.
Purpose: An advanced web application for designing and building HTML5 creatives.
Features: