Google has laid off over a thousand employees across various departments since January 10th. CEO Sundar Pichai’s message is to brace for more cuts.

“We have ambitious goals and will be investing in our big priorities this year,” Pichai told all Google employees on Wednesday in an internal memo that was shared with me. “The reality is that to create the capacity for this investment, we have to make tough choices.”

So far, those “tough choices” have included layoffs and reorganizations in Google’s hardware, ad sales, search, shopping, maps, policy, core engineering, and YouTube teams.

“These role eliminations are not at the scale of last year’s reductions, and will not touch every team,” Pichai wrote in his memo — a reference to when Google cut 12,000 jobs this time last year. “But I know it’s very difficult to see colleagues and teams impacted.”

Pichai said the layoffs this year were about “removing layers to simplify execution and drive velocity in some areas.” He confirmed what many inside Google have been fearing: that more “role eliminations” are to come.

“Many of these changes are already announced, though to be upfront, some teams will continue to make specific resource allocation decisions throughout the year where needed, and some roles may be impacted,” he wrote.

A spokesperson for Google didn’t have additional comment.