Developers are shifting their focus from writing extensive code to leveraging managed services integrations and third-party APIs, which may lead to a significant reduction in the amount of supporting code needed in applications. According to Alex Casalboni, Technical Evangelist at AWS, this trend is expected to become more prevalent in 2020, driven by cultural and technical changes within organizations. Smaller teams and training programs are recommended as approaches to overcome organizational challenges, while technical improvements and innovations such as Amazon EventBridge and Custom Runtimes are expected to simplify developers' lives. The goal of serverless adoption in 2020 is to achieve "less code" writing, leveraging managed services integrations and APIs to solve problems and satisfy customers' needs more efficiently.