Scrum is the most popular Agile development framework because it is relatively
simple to implement. It also solves a lot of problems that software developers have
struggled with in the past, such as convoluted development cycles, inflexible project
plans and delayed production.
Scrum is based on the principles and values of The Agile Manifesto.
Scrum process consists of Planning, Sprint cycle and Closure.
Scrum is a sub group of Agile.