'Adverts will appear in WhatsApp by next year in an attempt to monetise the app, parent company Facebook has confirmed.
Promotional images will appear in WhatsApp's 'Status' feature, which is similar to Stories in Instagram, Facebook revealed at its marketing conference.
The controversial move goes against a promise made by WhatsApp's founder Brian Acton about never bringing advertising to the product.
Businesses will also be able to interact with customers using chat windows with 'richer message formats', Facebook said.
Matt Navarra, a social media consultant, tweeted the updates from the annual Facebook Marketing Summit.
He wrote: 'Coming Soon to @Whatsapp - WhatsApp Status (Stories) to get Ads in 2020:
'WhatsApp for Businesses to get richer messaging format options.
'WhatsApp product catalog to be integrated with existing Facebook Business Manager catalog.'
The Status ads will appear between news updates and allow users to swipe up to gain more information about the product.
Status on WhatsApp is similar to a story on Instagram or Facebook as an update that lasts for 24 hours.
Adverts on Facebook will also link to WhatsApp to allow users to talk directly to brands via the messenger app as well as through Facebook Messenger.
In one of the pictures showing a Facebook advert at the summit, the option to 'Open on WhatsApp' was included.
Facebook also announced a new look for business account holders which allows them to communicate directly with customers through 'richer message formats' in messaging windows.'
Read more: WhatsApp announces it will host ads by next year at parent firm Facebook’s marketing conference - breaking its founder's promise that this would NEVER happen
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