Whats the difference between hub motors and crank motors on electric bikes?

Whats the difference between hub motors and crank motors on electric bikes?
Electric bikes are very popular among older people. Around 40% of our customers at E-bikes Direct are over 50 years old. You won’t find such a large number of people from that group buying traditional bikes. What’s the draw to e-bikes by older folk?
Entering the world of Bosch equipped electric bikes has never been so affordable, Raleigh join forces with the market leading Bosch Ebike Systems to create the Captus. Enjoy many carefree miles of power and performance.
Only 48cm Frame available
Raleigh join forces with the renowned Bosch ebike system to create the Captus
Raleigh join forces with the renowned Bosch ebike system to create the Captus