The article discusses the rise of widgets as user engagement tools that live within products. It highlights two key trends making in-product user engagement important for SaaS growth: customers wanting faster communication and solutions, and contextual user experiences being expected and high-converting. The author then recommends eight tools that live inside products and provide great out-of-the-box functionality to drive product-led growth. These include Olark, Intercom, Hotjar, Delighted, VideoAsk by Typeform, FullStory, Drift, and Chameleon. The article emphasizes the importance of understanding how each stage of a user journey works in order to improve engagement and leverage these tools effectively.