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AWS Machine Learning Blog Dec 19, 2025 18:23 UTC

Introducing SOCI indexing for Amazon SageMaker Studio: Faster container startup times for AI/ML workloads

Today, we are excited to introduce a new feature for SageMaker Studio : SOCI (Seekable Open Container Initiative) indexing.

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What’s new (20 sec)

Today, we are excited to introduce a new feature for SageMaker Studio : SOCI (Seekable Open Container Initiative) indexing.

Why it matters (2 min)

  • Today, we are excited to introduce a new feature for SageMaker Studio : SOCI (Seekable Open Container Initiative) indexing.
  • SOCI supports lazy loading of container images, where only the necessary parts of an image are downloaded initially rather than the entire container.
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Go deeper (8 min)

Context

Today, we are excited to introduce a new feature for SageMaker Studio : SOCI (Seekable Open Container Initiative) indexing. SOCI supports lazy loading of container images, where only the necessary parts of an image are downloaded initially rather than the entire container. SageMaker Studio serves as a web Integrated Development Environment (IDE) for end-to-end machine learning (ML) development, so users can build, train, deploy, and manage both traditional ML models and foundation models (FM) for the complete ML workflow. Each SageMaker Studio application runs inside a container that packages the required libraries, frameworks, and dependencies for consistent execution across workloads and user sessions. This containerized architecture allows SageMaker Studio to support a wide range of ML frameworks such as TensorFlow, PyTorch, scikit-learn, and more while maintaining strong environment isolation. Although SageMaker Studio provides containers for the most common ML environments, data scientists may need to tailor these environments for specific use cases by adding or removing packages, configuring custom environment variables, or installing specialized dependencies. SageMaker…

For builders

Builder: read docs/changelog; watch for breaking changes, quotas, and pricing.

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Receipts

  1. Introducing SOCI indexing for Amazon SageMaker Studio: Faster container startup times for AI/ML workloads (AWS Machine Learning Blog)