Arif Lubis et al. 2023. Strategy Of Omni Channel Marketing & Business Sustainability Of E Commerce Through The Character And Mindset Of Msmes During The Covid-19 Pandemic In Siantar City. Journal Of Management Analytical and Solution (JoMAS). 3, 2 (Jun. 2023), 39–44. DOI:https://doi.org/10.32734/jomas.v3i2.12435.