Apple Inc. plans to invest $1 billion to build a second campus in Austin, Texas, for 5,000 employees, widening its footprint in a familiar region rich with engineering and business talent as it joins other tech giants in expanding beyond the West Coast.

The iPhone maker laid out its strategy Thursday in an announcement about new jobs it will add across the country. The move would be a step toward fulfilling a pledge made in January when it said it would invest $30 billion in capital spending and create 20,000 jobs in the U.S. over the next five years.

Apple said it would add more than 1,000 employees apiece in San Diego, Seattle and Culver City, Calif., areas where it has been increasing staff to support its development of custom chips, machine-learning systems and Hollywood programming. It also plans hundreds of additional jobs in cities where it already has offices, including New York, Boston and Portland, Ore.

The Austin campus would have the capacity to eventually accommodate 15,000 employees, Apple said, and was expected to make the company the city’s largest private employer.

The announcement came weeks after Amazon.com Inc. and Alphabet Inc. said they would expand in regions where they already have a presence. Amazon last month awarded campuses to New York and Northern Virginia, bringing 25,000 jobs to each area; Alphabet said its Google unit would double its workforce in New York to more than 14,000 over the next 10 years.