"It is clear that we need to deepen our relationships with fans, players and the broader cricket community," Roberts said in a statement.
"We are committed to making cricket stronger and developing closer connections with the community and greater alignment across the organisation.
"Everyone at CA is focused on rebuilding and moving forward after what has been a turbulent year in Australian cricket."
After the sandpaper plot in March, then-captain Steve Smith and his deputy David Warner were banned for 12 months, and batsman Cameron Bancroft for nine months.
A damning independent review found Cricket Australia partly responsible for the incident, saying an "arrogant" and "controlling" culture led to players cheating in the pursuit of victory.
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