The "Challenge 2 – Host Your Gatsby Site for Free" article by Hashim Warren encourages developers to explore the Gatsby framework by participating in the #100DaysOfGatsby challenge, particularly focusing on deploying a Gatsby site using free tools. Participants are guided to host their projects on cloud git repositories and employ continuous deployment tools to publish their sites to a Content Delivery Network (CDN), emphasizing that many services offer free hosting for small projects. The article suggests using platforms like GitHub, GitLab, Bitbucket for repositories, and AWS Amplify, Netlify, or Vercel for building and hosting. It also highlights the opportunity to experiment with multiple services to assess differences in features, developer experience, and performance. For assistance, developers can engage with the Gatsby community through various online platforms, ensuring they receive support throughout the challenge.