As the name suggests a bridge camera offers a bridge between the functionalities that get offered by both the P&S camera and DSLR. 

Best Mirrorless Cameras for Beginners

Mirrorless cameras are, simply put, cameras without a mirror. Unlike DSLRs, they don’t have a mirror that’s involved in and necessary for their function

To go DSLR or mirrorless? Most new to picking cameras to ask this question. Both DSLR and mirrorless cameras are very popular with consumers nowadays.