Haystack, an open-source framework by deepset, offers a flexible toolkit for building production-ready LLM applications and Compound AI systems. It provides a range of abstractions, integrations, and customization options, making it a robust choice for developers. A new self-paced course, "Building AI Applications With Haystack," available on DeepLearning.AI and led by Tuana Çelik and AI expert Andrew Ng, guides learners through Haystack's capabilities, including building complex systems like retrieval augmented generation (RAG) pipelines and agentic chat pipelines. The course assumes familiarity with Python and language models, but no extensive AI knowledge is required. DeepLearning.AI, founded by Andrew Ng, continues to offer accessible, focused AI education through short, practical courses designed for busy professionals. Haystack 2.0, the latest release, enhances flexibility and customization, and powers deepset Cloud, an enterprise AI development platform.