End-user equipment, consumer premise equipment and its software have evolved to become faster, more powerful and able to perform data collection. This has enabled the crowdsourcing approach which seeks to increase the amount of technical parameters which can be collected from end-users without modification to existing hardware and software. Increasingly, players such as regulators and service providers have started to assess end-to-end QoS through a crowdsourcing approach. However, assessment using data collected through the crowdsourcing approach can be deployed in multiple ways and different approach provides different view of QoS. This Recommendation outlines the different crowdsourcing approaches used to assess end-to-end QoS on both fixed and mobile broadband networks.