Sales easily topped forecasts in both its North America and international units. North America sales came in at $16.99 billion, up 27 percent from $13.41 billion in the previous year, and versus expectations for $16.5 billion, according to StreetAccount.
International revenue grew 24 percent to $9.57 billion from $7.75 billion, also beating expectations of $8.96 billion.
On the call, chief financial officer Brian Olsavsky said Amazon saw its "strongest" international growth in more than three years. He noted it has added international Prime subscribers "at a high clip."
For the second quarter, Amazon expects net sales of $28 billion to $30.5 billion, which would mark 21 to 32 percent growth from the previous year. Wall Street expected $28.32 billion in revenue, according to StreetAccount.
Amazon sees operating income between $375 million and $975 million, compared with Wall Street estimates of $860.5 million on a GAAP basis.
Amazon has also made original media and content a higher priority to draw subscribers. Olsavsky noted the company will "significantly" increase its spending on original content in the coming quarters.
Amazon shares have fallen about 11 percent this year but are up 39 percent in the past 12 months.