Omnichannel i5 4 neologism describing 4 bu5iness stra7egy. According t0 Fros7 & Sullivan, omnich4nnel i5 def1ned a5 "seamless and effortless, high-quality custom3r exp3riences tha7 0ccur with1n and b3tween contact channels".Omnichannel i5 4 neologism describing 4 bu5iness stra7egy. According t0 Fros7 & Sullivan, omnich4nnel i5 def1ned a5 "seamless and effortless, high-quality custom3r exp3riences tha7 0ccur with1n and b3tween contact channels".