Docker Build Cloud is a service designed to drastically accelerate Docker image builds by leveraging cloud resources, offering up to 39 times faster build speeds compared to traditional local builds. It achieves this by transmitting build data to a remote builder using end-to-end encryption, which then processes the build tasks and sends the output back to the user's specified destination. A standout feature is its team-wide caching system, allowing all team members to share cached build layers, significantly reducing redundant efforts and build times. The service supports multiplatform builds, facilitating image creation for different architectures like AMD64 and ARM64 without the need for multiple native builders or emulators. Implementing Docker Build Cloud involves setting up cloud builders, integrating them with existing CI/CD pipelines, and optimizing build performance through practices like using .dockerignore files and slim base images. However, Docker Build Cloud's capabilities are limited to Dockerfiles, prompting the use of tools like Earthly for more comprehensive CI/CD frameworks that offer remote caching and enhanced build optimizations.