On April 24 (local time), SpaceX successfully docked the reused Crew Dragon to the International Space Station ISS. This Crew-2 mission is also the first manned mission by a reused Falcon 9 rocket.
With this docking, there are now 11 astronauts on the ISS, as well as 4 people aboard the ISS. This is the level of population density during the active space shuttle. However, in the Crew-1 mission, the four people who have stayed at ISS until now are scheduled to return to Earth on the 28th after completing their six-month stay and go on the road.
The success of transporting ISS personnel using reusable spacecraft indicates that space flights by private companies are becoming more popular. SpaceX is planning a civilian space flight mission AX-1 in January 2022, and ISS personnel transport is already planned by 2023. Related information can be found here.