1. 1. Deployment Process: The key difference between AWS CodeCommit and AWS CodePipeline is the nature of their deployment processes. CodeCommit is a fully-managed source control service that allows developers to store and manage their code repositories. On the other hand, CodePipeline is a fully-managed continuous delivery service that automates the build, test, and deployment processes of applications.
2. 2. Source Code Management: CodeCommit primarily focuses on source code management, providing features such as version control, branch management, and repository management. It allows developers to collaborate and manage their code securely. In contrast, CodePipeline does not provide source code management but integrates with CodeCommit to retrieve the source code for the build and deployment processes.
3. 3. Pipeline Stages: CodeCommit does not have the concept of stages or pipeline steps. It serves as a centralized repository for storing and managing code. On the contrary, CodePipeline is designed around the concept of a pipeline, which consists of multiple stages. Each stage represents a step in the deployment process, such as build, test, and deploy. CodePipeline allows for more granular control and customization of the deployment workflow.
4. 4. Automation: While CodeCommit provides version control and collaboration capabilities, it does not automate the entire deployment process. CodePipeline, on the other hand, automates the build, test, and deployment processes, reducing the manual effort required for deploying applications. It automatically triggers the pipeline when changes are pushed to the code repository, enabling a continuous delivery workflow.
5. 5. Integration: CodeCommit integrates with other AWS services and tools, such as AWS CodeBuild for building applications and AWS CodeDeploy for deployment. However, these integrations need to be configured separately. CodePipeline, on the other hand, provides out-of-the-box integration with various AWS services, including CodeCommit, CodeBuild, and CodeDeploy. This seamless integration simplifies the setup and configuration of the deployment pipeline.
6. 6. Pipeline Visualization: CodeCommit does not offer a visualization of the deployment pipeline. Developers can view the repository contents, commit history, and branches, but they cannot visualize the entire deployment workflow. CodePipeline, on the other hand, provides a graphical representation of the pipeline, allowing developers to visualize the different stages and their dependencies. This visualization helps in understanding and troubleshooting the deployment process.

In Summary, AWS CodeCommit is a source code management service, while AWS CodePipeline is a continuous delivery service that automates the entire build, test, and deployment processes through a pipeline. CodeCommit focuses on repository management, whereas CodePipeline automates the deployment workflow, integrating with various AWS services, and providing pipeline visualization.