Dominion Voting Systems is a company that makes voting machines. These machines are used in elections to count the votes that people make. When you go to vote, you might use a paper ballot and put it in a box or use a voting machine to record your choice. Dominion Voting System machines can also count the votes from multiple polling locations and report them all in one central location.
Dominion Voting Systems has been in the news lately because some people think that there were problems with the machines used in the 2020 US Presidential Election. Some people think that the machines didn't count the votes correctly or that they were hacked by bad people who wanted to change the results. However, there is no evidence to support these claims and no independent investigation has concluded that Dominion machines were responsible for any widespread issues with the election.
Overall, Dominion Voting Systems is simply a company that makes machines to help count votes in elections. These machines have been used in many elections around the world, including in the United States, and are widely trusted by election officials and experts.