Overview

Generative AI Fundamentals and Foundations: How Large Language Models and Generative Systems Really Work.What really makes generative AI work-and why do so many teams struggle to move from impressive demos to reliable systems in production? If you're a developer, engineer, or technical leader working with large language models, you've likely felt the gap between surface-level explanations and the deep understanding required to build systems that actually hold up in the real world. Generative AI Fundamentals and Foundations: How Large Language Models and Generative Systems Really Work closes that gap. This book delivers a clear, practical, and engineering-first explanation of generative AI, stripping away hype and focusing on how modern systems behave, scale, fail, and succeed in production. Instead of treating models as black boxes, it explains the mechanics behind tokens, representations, transformers, training pipelines, inference behavior, prompting, evaluation, safety, and long-term system design-using mental models developers can apply immediately. You'll learn how generative systems differ from traditional machine learning, why probabilistic generation changes software design, and how real-world constraints like cost, latency, drift, and reliability shape every architectural decision. The book connects foundational concepts to production realities, helping you reason about model behavior with confidence rather than trial and error. By the end of this book, you will be able to: Understand how large language models generate outputs and why they behave unpredictably under certain conditions Design prompts, contexts, and inference pipelines that are stable, repeatable, and cost-aware Identify and mitigate common failure patterns such as hallucinations, drift, prompt fragility, and silent degradation Evaluate generative outputs using practical, production-ready metrics instead of outdated benchmarks Build end-to-end generative AI systems with monitoring, versioning, safety controls, and long-term maintainability in mind Communicate clearly about capabilities, limitations, and risks to stakeholders and teams Written with a direct, tutorial-driven style, this book avoids unnecessary theory and focuses on proven practices already used in real systems today. It is designed to be a reference you return to as your models, products, and responsibilities grow. If you're ready to stop guessing and start building generative AI systems you can trust, Generative AI Fundamentals and Foundations is the book to add to your shelf today.

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