The Council will consist of several Cabinet members and other high-level intelligence officials, such as the Director of National Intelligence, Secretary of Homeland Security and the National Security Advisor.
There is nothing in the Executive Order that details exactly what its specific agenda will be, but it will terminate on January 20, 2021. The general agenda is clearly stated in Section 1:
It is the policy of the United States to promote the secure, efficient, and economical use of information technology to achieve its missions. Americans deserve better digital services from their Government. To effectuate this policy, the Federal Government must transform and modernize its information technology and how it uses and delivers digital services.