Another week, and three more business areas threatened by the arrival of Amazon. The first is social media: Amazon has launched an Instagram-like service called Spark; essentially a photo feed of products. The company has also expanded its food footprint with Amazon Meal Kits; essentially boxes of ingredients to prepare a full meal. And finally, the rumour mill is suggesting Amazon is about to move into the world of messaging apps with a new service called Anytime.

Get the latest in this week’s tech news roundup here