After the spin-off (October 2015), CDK was targeted by profit-seeking investors. Their motivation was to make the company more profitable and sell it to make a profit. This is a well understood strategy and (in and of itself) not a cause for concern.
The problem was the implementation. Big Mac and the executive leadership team did not follow a well rationed plan: sell of lower-margin products, consolidate product lines, seek efficiency in product delivery, etc... Rather, they made staffing cuts here and there hoping they'd get to the magic margin number that would attract a buyer. This didn't happen in 3 years and the leadership became more frantic.
The layoff in June of 2018 was a sign of how bad things have gotten. Between the layoff and the number of veteran employees leaving in September (when bonuses are being paid out), the company will not have any real experience on the floor to keep the lights on. They'll be hiring contractors only (at a premium) with no experience with the product set or customer needs.
The next 3 years will be a struggle to maintain any semblance of a functioning company. I predict employees and customers will leave in droves.