Wiz, the Israeli cloud security firm being acquired by Google-parent Alphabet (NASDAQ:GOOG), just cleared a big regulatory hurdle. The U.S. Justice Department has finished its antitrust review of the $32 billion deal giving Alphabet the green light to move one step closer to closing its biggest acquisition ever.

This is an important milestone, but we’re still in the journey between signing and closing, Wiz CEO Assaf Rappaport said at a Wall Street Journal event on Tuesday. His comments suggest the two companies are making steady progress but still have a few boxes to check before the deal becomes official.

The acquisition is a huge move for Alphabet as it looks to strengthen its cloud and cybersecurity capabilities, especially in a market where competition with Amazon (NASDAQ:AMZN) and Microsoft (NASDAQ:MSFT) is heating up. Bloomberg had previously reported that the DOJ was reviewing the deal to ensure it wouldn’t hurt competition in the cybersecurity space.

With that review now behind them, Alphabet and Wiz are one step closer to sealing one of the biggest tech deals of the year.