Wiley is investing in online learning services, agreeing to purchase private-held Chicago-based Deltak.edu for $220 million. They say it will “significantly accelerate Wiley’s digital learning strategy and diversify the company’s service offerings to include operational and academic solutions for higher education institutions.” Deltak provides provides technology platforms and services that support over 100 online learning programs. The company had sales of $54 million for the just-ended fiscal year, and the deal is expected to close by the end of the month.