I.B.M. has become a model of predictably solid financial performance, reporting a modest increase in revenue but a greater increase in profit.

The giant supplier of corporate technology delivered first-quarter results on Tuesday that fit the pattern — with a bit extra as profit and revenue exceeded Wall Street’s expectations.

I.B.M. also raised its forecast for operating profit for the year, to “at least $13.15” a share. The earlier guidance was for “at least $13” a share.

In a statement, Samuel J. Palmisano, I.B.M.’s chief executive, said the company saw “excellent momentum” in areas it had pegged for higher growth, including business intelligence software and emerging markets abroad.