The American Marketing Association of Iowa will host its monthly luncheon on Wednesday. Martin Ridgway from Perficient will speak on responsive Web design. The event will take place from 11:30 a.m. to 1 p.m. at Des Moines Golf and Country Club, 1600 Jordan Creek Parkway, West Des Moines. Registration, due by noon on Monday, is $20 for association members and $35 for nonmembers. Go to www.amaiowa.com to register.