Jenkins Freestyle Projects offer a flexible and configurable way to create build jobs for various tasks such as compiling code, running tests, or deploying applications. These projects are highly adaptable, allowing developers to script actions and integrate with various plugins like Git, Maven, and SonarQube. Despite their power, managing Freestyle jobs can be cumbersome, prompting a shift towards Declarative Pipelines which provide a more structured and modern approach. Creating a Freestyle project involves setting up Jenkins, configuring project details, and integrating source code management and build steps. Additionally, there are methods to convert Freestyle projects into Declarative Pipelines using tools like the Declarative Pipeline Migration Assistant, which automates parts of the transition process. This conversion is beneficial for maintaining a more robust and manageable CI/CD pipeline. Through the use of plugins and scripts, Jenkins Freestyle Projects can be extended to handle complex build tasks, including building Docker container images and scanning serverless functions for vulnerabilities.