Nice article! By the way, the share of the IoT in the retail market was $3.37 billion in 2017 and is expected to reach more than $11 billion by 2025 https://softmedialab.com/blog/how-to-develop-an-iot-app/ How IoT may affect the e-commerce industry?

Good post, thank you! I've found the information that in 2017, IoT services spending exceeded $270 billion in the US: https://softmedialab.com/blog/how-to-develop-an-iot-app/ In your opinion, how much it will be in 2018?

Augmented reality is not the same as Virtual reality. AR superimposes a computer-generated image on a user's view of the real world, thus providing a composite view. VR is the computer-generated simulation of a three-dimensional image or environment. How to Develop an AR Mobile App Best Tools for VR Development

Some of the best tools for augmented reality are: Kudan Vuforia Apple ARKit ARToolKit To find out their pros and cons read this article: How to Develop an AR Mobile App

Do I have clear, pre-defined data structure? (If yes, then MySQL suits) Do I need a reliable store? (If yes, then PostgreSQL) What performance do I need? (If high, then no MySQL) Honestly, I think that 3 questions are not enough to choose a correct database :) This guide contains a lot of useful tips on choosing a DB.