Lazada, the Southeast Asian e-commerce arm of Alibaba Group Holdings, has partnered with Gmarket, a South Korean online marketplace, to give shoppers across Southeast Asia access to 20 million products from South Korean sellers. The partnership, launched on Monday, introduces a storefront for Gmarket within LazMall, Lazada’s flagship virtual shopping mall. Shoppers in Singapore, Malaysia, Thailand, the Philippines and Vietnam will be able to buy a wide range of products from popular beauty and...