Walmart India, the U.S. retail major, appointed Sameer Aggarwal as its Chief Business Officer. Mr.Sameer has been elevated from his position as EVP, chief strategy and administrative officer to the Chief Business Officer with immediate effect. Aggarwal will now lead strategy, merchandising, cost analytics, e-commerce, technology, marketing, and replenishment. Walmart India also appointed Anuj Singh as Head-Category Merchandising. The announcement followed after the resignation of Executive Vice-President (EVP) and Chief Operating Officer (COO) Devendra Chawla. Mr.Chawla had joined Walmart India in July last year from Future Consumer, a part of Kishore Biyani-led Future Group.