Docker has become a significant topic in the IT industry, with many companies striving to adopt containerization to improve application deployment and management. Before embarking on the transition to Docker, it is crucial to evaluate whether the architecture of a product is suitable for containerization, particularly if it involves monolithic structures or tightly-coupled components. The transition often requires a shift towards microservices or decoupled applications, which can demand substantial code rewrites. Emphasizing the benefits of the 12-factor app methodology, containerization can enhance scalability and efficiency, albeit at the cost of initial efforts to integrate orchestration, service discovery, and new security measures. Docker's ecosystem offers diverse options for networking, storage, and security, requiring careful selection of tools and plugins to optimize performance and maintain data integrity. Monitoring and logging are also critical, with numerous solutions available to manage these aspects effectively in a containerized environment. Despite the potential challenges, Docker's flexibility and the vast ecosystem surrounding it provide organizations with powerful tools to streamline their software infrastructure.