There are several differences between Google Analytics and Google Data Studio. Here are the main ones.
Data Source
Analytics is a tool that collects data primarily related to web traffic and allows you to manipulate, transform, or delete it.
Data Studio doesn't just collect data, it transforms it into phone number library easy-to-understand visualizations and reports. Once you connect to different sources, you can create all kinds of graphics based on them.
Custom Metrics
Data Studio offers the ability to create and use as many metrics and dimensions as you want, unlike Analytics, which allows a limited number of fields.
Control Panels
With Google Analytics, you can create dashboards within the interface: a series of widgets where you can detail a description of reports or metrics. These dashboards report data only from the tool and not from other sources, unlike Data Studio.
When you create a dashboard within Google Analytics, you can add charts to your data; however, the final results aren't as attractive as those achieved with Google Data Studio.