Do you know about custom IoT solutions?

We apply IoT to almost every human activity to do the work efficiently. But different activities need different requirements like different data collection and processing. Therefore we need customizable IoT solutions so that we can use it according to the requirements. This is where custom IoT solutions come into action which help to give perfect IoT solutions for the customers according to their demand. Guys, I would like to know more about custom IoT solutions, If you know more information about it Let's share it with me.