Online courses are gaining recognition very quickly. As a result, there are now many careers built around online qualifications. So, now the giant internet Google has thrown its hat into the ring of online education by offering Google digital marketing certification. Online courses give their students a great deal of flexibility to study around work and other commitments to improve their knowledge in their own time. Since Google began the Grow with Google initiative, many other large private companies have started to offer similar courses for their employees first. Gradually are opening them to the public as well. For example, Amazon has some free courses. They teach people how to use Amazon to grow their businesses.