Which can be a better solution for any kind of motion application... a servo or a stepper... Accuracy is not a factor to consider

except to its cost servo system is better

it's really an apples to oranges comparison.Servo is closed loop, stepper is generally open loop control. There are differing applications where each is the better fit.

One has to look what you want achieve,servo control is definitely better for precision control and for auto mode operation hooked up with real time process control .

The stepper could be a much cheaper solution if it accomplishes the results you desire. A simple step and direction controller is much cheaper than a servo controller. Many high speed counter cards have a step and direction output that you can user to control the stepper controller. As the name implies the stepper motor moves in discrete steps, you can also step it half and quarter steps. The stepper motor is OK if you do not need high torque and do not need to control the torque. Stepper motors tend to run hotter than servo motors as the amount of current the motor consumes is not dependent upon the load. Some controllers will let you reduce the current between steps, this would be OK if you do not need as much torque to hold position as to step to position.

If accuracy doesn't matter then it is better to choose stepper cause it will be economically better.

servo

If properly sized, a stepper motor solution is cheaper and robust--less complicated than a servo.

The above assumes point to point motion--i.e. no velocity profiles needed. Along with, if accuracy is not a concern, why not use DC motor instead? If you need high starting torque use a series wound DC motor. Use limit switches to shut the motor at end of motion--simple digital circuit will enable reverse motion. In the end, the choice of the drive system ultimately depend on the motion profile and the load.

Hi I'm andrea from Italy
Sorry fo my "little english".
I'm using stepper motor in closed loop (actually with an incremental encoder). With this solution there is not the step loss problem, there is not temperature problem because the current is not fixed but it's modulates and the system is chipper than brushless solution.
In my opinion the problem is the torque/velocity diagram of stepper motor. The torque decreases very fast when the velocity increases, but, in particular field of application (high torque and low speed) the stepper solution in closed loop is a good solution.