The Internet speed required for a satisfactory quality of experience depends on the activities performed on the Internet, with data-hungry applications such as video and online gaming the most demanding in terms of speed. Beyond Internet speed, other technical factors such as latency might be important for users of time-sensitive applications, such as over-the-top voice applications like Skype or Viber. Quality of service parameters, such as broadband speed and latency, may depend both on the ability of the Internet service provider to deliver on the advertised conditions and on the economic capacity of customers to pay for the plan that better meets their requirements.