Google Fiber is hitting the pause button on expansion efforts, and the head of the fiber business unit is stepping down. Craig Barratt, senior vice president at Google parent company Alphabet and CEO of Access, announced the changes in a blog post. To continue to grow and stay ahead of the curve, the company has refined its plans, he said in the post. “In terms of our existing footprint, in the cities where we’ve launched (Google Fiber) or are under construction, our work will continue.