Pros
The people there try to succeed. There are many talented folks who deserve better. The benefits package is really strong. Pay is very good as well. And since there's not a real commitment to hard work from the top down, you can probably skate by without working too hard while still raking in the salary.
Cons
Leadership on the ground is rudderless. Workers are left with little direction or guidance. Trying to improve things pushes you up against tons of resistance. There are massive issues of overall strategy and competence that would have been addressed years ago by a more serious company. The executives treat employees poorly. There's a real sense that they're above it all and play by their own rules. DT shows little commitment to hiring diverse candidates — despite a history of deeply concerning remarks and actions. Constant HR turnover in my time there. Publicly, the company says the right things, but internally, there's no real plan of action. The executives talk big but don't back it up. Lastly, the company's revenue is built on a house of cards. They consistently buy huge chunks of fake traffic using bots to trick advertisers and appear more successful than they truly are. Don't be there when it all comes crashing down. Just stay far away. Even as a stepping stone organization, there are better places for your career elsewhere.