Merge Multiple shapefile in ArcGIS

Best Method to merge different shapefiles in ArcGIS. This tutorial helps to merge multiple shapefiles into single layer or combine multiple layers to single layer.

[rajimoltr]

Thank you so much sir...very clear explanation

[malavikak.r]

if the attribute fields for each layer which need to be merged are different then is it possible to do this way?

[shivamsaw]

I want there should not be any boundary in between only outer boundary shape file, how it can be achieved