Amazon.com Inc.’s cloud unit posted the strongest sales growth in a year, a sign that the retailer’s most profitable unit is recovering from a slump as businesses resume spending on technology projects,

In its first-quarter financial results, released Tuesday afternoon, Amazon reported $143 billion in revenue, $10.4 billion in profit and 98 cents earnings per diluted share. In the same time period last year, Amazon reported $127 billion in revenue, $3.2 billion in profit and 31 cents earnings per diluted share.

The Seattle-based e-commerce giant said it brought in $143.31 billion in revenue in the first three months of this year, a 13% jump compared with the same period last year. Net income came out to $10.