Learn the foundational concepts of transformer architecture in this comprehensive 80-minute lecture from the University of Utah Data Science program. Explore the revolutionary neural network architecture that has transformed natural language processing and machine learning, covering the key components including attention mechanisms, encoder-decoder structures, and self-attention layers. Understand how transformers process sequential data more efficiently than traditional RNNs and LSTMs, and discover why this architecture has become the backbone of modern language models like BERT and GPT. Gain insights into the mathematical foundations, implementation details, and practical applications of transformers in various AI tasks including machine translation, text summarization, and language understanding.