Snap is going public: its filing shows widening losses and slowing user growth, calling into question its ability to reach profitability and justify the ~$20 billion valuation it is seeking

Long term, the company hopes to capture the large brand advertising budgets it expects will leave TV as linear viewing declines. But how it plans to do so is unclear, as it has shown little interest in connected TVs, and the ad model for augmented reality – Snap’s focus – is a long way off

Most of all, investors are being asked to trust in the ability of Snap’s founders – who will retain full control of the company – to continually innovate products which will attract users and advertisers

Amazon’s marketing services bring in a growing stream of direct, high-margin revenue, but their main role is still in supporting vendor partnerships

Amazon uses customer profile data to profit from its own media and that of others, illustrating the value of a direct customer relationship in online advertising

In the future, Amazon’s moves into video content and voice interfaces are likely to significantly expand ad inventory, but maintaining the trust of shoppers is not straightforward

Despite a slowing of circulation decline in 2016, UK national newspaper brands continue to face profound structural challenges, with print advertising spend expected to be down at least -15% for the year

In digital advertising, tech and distribution platforms continue to dominate growth with newspaper publishers and other content producers competing for an increasingly small slice of the revenue pie

In this context, many publishers are turning to paid membership and content subscription models to generate online revenues; success here will require a radical shift in thinking to a retailer mindset that delivers high quality reader experiences through integrated execution of tech, data, marketing and design