Infosys raised its lower-end growth forecast for the fiscal, with revenue expected to expand between 1% and 3% from the earlier 0-3%. The company is also gaining from increased adoption of artificial intelligence, top executives said. AI programmes are improving productivity between 5% and 15% and this is being partly passed on to customers, according to CEO Salil Parekh who struck an optimistic note at the company’s post earnings call on Wednesday.