WASHINGTON — Retailers in 2012 will invest heavily in IT, e-commerce, customer service and mobile platforms in order to build customer engagement, a new report from the National Retail Federation Foundation and KPMG found. The report, titled, Retail Horizons: Benchmarks for 2011, Forecasts for 2012," surveyed 247 retail executives from various sectors, outlines retailers’ top strategic initiatives for 2012 including merchandising, ecommerce, store and field operations, supply chain and human capital, among others.