An important type of artificial neural networks in unsupervised deep learning is called autoencoders. Their purpose is to acquire effective data representations, usually for feature learning or dimensionality reduction. Without requiring labelled samples, autoencoders may find underlying structures in the data by compressing it into a lower-dimensional space and then rebuilding it. examines the purpose, design, and uses of autoencoders while emphasizing their importance in Deep Learning Courses and training initiatives in places like Delhi.