Jenkins is often used to automate the building and testing stages in CI/CD pipelines. It is an open-source automation server that supports building, deploying, and automating any project.

A well-designed logging system should provide log rotation to manage log file sizes, encryption for securing sensitive information, and anonymization to protect user privacy. Hence, all the options are essential features of a robust logging system.

Implementing OAuth2 with JWT tokens is a secure method for handling authentication errors. OAuth2 provides a standardized framework for authentication, and JWT tokens add an extra layer of security by encoding information.

Continuous Deployment (CD) is the process of automatically deploying code changes to production after they have passed all necessary tests in the CI/CD pipeline. This ensures a smooth and efficient release process.

In AWS, Amazon S3 (Simple Storage Service) is a scalable storage service in the cloud. It allows users to store and retrieve any amount of data at any time. S3 is commonly used for backup, archiving, content distribution, and data storage for web applications.

Containerization in software development serves multiple purposes, including isolation of applications, standardization of deployment environments, and enhancing portability. Containers encapsulate applications and dependencies, making them consistent across various environments and easing the deployment process.

The Strategy design pattern is used to define a family of algorithms, encapsulate each algorithm, and make them interchangeable. It allows the client to choose the appropriate algorithm at runtime.