What Meta AI tools to make engineers productive

Here is a citation from Marc Zuckerberg, where he said, “We’re working on flattening our org structure and removing some layers of middle management to make decisions faster, as well as deploying AI tools to help our engineers to be more productive,” https://nypost.com/2023/02/08/zuckerbergs-meta-to-flatten-middle-managers-in-cost-cutting-push-report/

People familiar with the situation, please share what tools he is referring to?