The kettlebell swing is a great compound exercise as it offers so many benefits. Primarily it targets your glutes, however, it also targets your hamstrings, back, core, shoulders, chest and even improves your grip strength.
It's good for strengthening all the muscles that lead to a person having bad posture, so if you spend most of your day sitting at a desk, this is the ideal exercise to help prevent or cure long term slouching.
This exercise can either be performed in the gym or at home, the only piece of equipment you will need is the kettlebell. Remember before attempting any weighted exercise ensure you have good/correct form, done incorrectly it would be very easy to injure your lower back performing this exercise.
For more of a challenge, alternate between one arm swings or increase the weight. Ensure you use correct form with a neutral spine.