SINGAPORE — Amazon has extended its relationship with Ogilvy across multiple Southeast Asian markets as the ecommerce giant steps up its global selling program in the region.

The Holmes Report can reveal that Ogilvy has secured a lucrative mandate to support Amazon Global Selling in Thailand, Vietnam and across Southeast Asia, following a competitive review. The firm already works with Amazon in China, India and Singapore.

Amazon's global selling program is viewed as an important growth driver for the company, enabling people and businesses to sell their products across the world. Currently, Amazon operates 13 marketplaces, including Japan, China, India and Australia.

Earlier this year, Amazon unveiled plans to enter Vietnam, after launching in Singapore last year. However, the company faces fierce competition from Alibaba's Lazada, along with and Tencent.

Both Ogilvy and Amazon declined to comment on the news.