Artificial Intelligence (AI) is a broad term used to represent the intelligence of the system. Machine Learning is the sub category of Artificial Intelligence. The application of Machine Learning algorithms is prevalent in every fields from the recommendation systems of news, music and diagnosis decision systems and it is negligible because it makes life easy and comfortable. It has been helpful in predicting and forecasting the information even for the COVID 19 pandemic. This paper presents a comprehensive review on Artificial Intelligence (AI) and Machine Learning (ML) Techniques employed in various domain. The review covers the advantages, limitations and various applications of the AI and ML. The prevalent AI and machine learning applications which aids the situation of COVID 19 pandemic is also presented

Keywords : ArtifiAnisha. C. D; Dr. K. G. Saranyacial Intelligence (AI), Machine Learning (ML), COVID 19