Wal-Mart Stores Inc has begun testing an online grocery delivery service in San Jose, California, according to announcement by a company. 

The format of the service is like consumers can visit a website walmart.com and order a grocery and fresh produce, meat& seafood, frozen, bakery, OTC pharmacy, household supply and health & beauty items  and have them delivered to home,  called " Walmart To Go".

If Walmart continues to serve online grocery, it will have a direct competition with Peapod and Amazon Fresh.