Because research data is an important part of research, it has to be properly managed. It should be stored long-term and made openly accessible. Here you can read more about what that means.
Today the number of research funders who work to make research data openly accessible and store it long term is increasing. These pages deal with why research data should be shared and how it can be made accessible. There is also information about data management plans, which are a step in making research data accessible.