The move by the largest U.S. cloud company is the latest sign rising economic uncertainty could be forcing companies to rethink data center spending.

Amazon.com has paused some data center lease talks for its cloud division, particularly in overseas markets, suggesting a short-term slowdown in leasing for large-scale facilities, Wells Fargo analysts said on Monday.

AWS is halting some data center leasing talks, even as the firm insists it has no intention of pulling back from its ambitious data center development plans