最近 SAMARI で要約された技術ニュースをお届けします。
Marco Rothが2025年Rails Luminaryに選出 - Congrats Marco Roth: 2025 Rails Luminary (https://rubyonrails.org/2025/12/17/marco-roth-2025-rails-luminary)
Ruby 3.4.8 リリース - Ruby 3.4.8 Released (https://www.ruby-lang.org/en/news/2025/12/17/ruby-3-4-8-released/)
AWS Payment Cryptography、API料金を最大63%値下げしキー料金を階層化 - AWS Payment Cryptography reduces API pricing by up to 63% and introduces tiered key pricing (https://aws.amazon.com/about-aws/whats-new/2025/12/aws-payment-cryptography-lower-pricing/)
AWS Security Incident Responseが10リージョンで利用可能に - AWS Security Incident Response is now available in ten additional AWS Regions (https://aws.amazon.com/about-aws/whats-new/2025/12/security-incident-response-ten-regions/)
Amazon EC2 M8g インスタンスが追加リージョンで利用可能に - Amazon EC2 M8g instances now available in additional regions (https://aws.amazon.com/about-aws/whats-new/2025/12/amazon-ec2-m8g-additional-regions/)
EC2 R8gインスタンスがパリとハイデラバードで提供開始 - Amazon EC2 R8g instances now available in additional regions (https://aws.amazon.com/about-aws/whats-new/2025/12/ec2-r8g-instances-additional-regions/)
OpenSearchに書き込み可能な新マルチティアストレージ登場 - Amazon OpenSearch Service now offers a new multi-tier storage (https://aws.amazon.com/about-aws/whats-new/2025/12/writeable-warm-tier-opensearch-optimized-instances/)
EC2 C8i と C8i‑flexがシンガポールで利用可能に - Amazon EC2 C8i and C8i-flex instances are now available in the Asia Pacific (Singapore) Region (https://aws.amazon.com/about-aws/whats-new/2025/12/ec2-c8i-c8i-flex-instances-singapore-region/)
Amazon Redshift Serverless、IPv6対応デュアルスタックモードを一般提供 - Amazon Redshift Serverless announces the general availability of dual-stack mode supporting IPV6 (https://aws.amazon.com/about-aws/whats-new/2025/12/amazon-redshift-serverless-announces-dual-stack-mode-ipv6/)
Amazon OpenSearch Service、OI2インスタンスを発表 - Amazon OpenSearch Service announces new OI2 instances (https://aws.amazon.com/about-aws/whats-new/2025/12/amazon-opensearch-service-oi2-instances/)
Amazon EC2のC8g、M8g、R8gインスタンスがAWS GovCloudの追加リージョンで利用可能に - Amazon EC2 C8g, M8g, R8g instances now available in additional regions (https://aws.amazon.com/about-aws/whats-new/2025/12/amazon-ec2-c8g-m8g-r8g-instances-additional-regions)
Amazon EC2 C8gインスタンスがAWS Europe（チューリッヒ）で利用可能に - Amazon EC2 C8g instances now available in Europe (Zurich) (https://aws.amazon.com/about-aws/whats-new/2025/12/amazon-ec2-c8g-instances-europe-zurich)
Amazon Aurora、RDSプレビューでPostgreSQL 18.1に対応 - Amazon Aurora now supports PostgreSQL 18.1 in the Amazon RDS Database preview environment (https://aws.amazon.com/about-aws/whats-new/2025/12/amazon-aurora-postgresql-18-1-rds-database-preview)
Vercel MarketplaceでAWSデータベースが利用可能に - AWS Databases are now available on the Vercel Marketplace (https://aws.amazon.com/about-aws/whats-new/2025/12/aws-databases-are-available-on-the-vercel/)
KotlinConf'25：主要企業が語るKotlinの実運用事例 - Industry Leaders on the KotlinConf’25 Stage: What Global Brands Built With Kotlin (https://blog.jetbrains.com/kotlin/2025/12/industry-leaders-on-the-kotlinconf25-stage/)
Gemini 3 FlashがGitHub Copilotのパブリックプレビューに - Gemini 3 Flash is now in public preview for GitHub Copilot (https://github.blog/changelog/2025-12-17-gemini-3-flash-is-now-in-public-preview-for-github-copilot)
GitHub Docsで動的Copilotプロンプトを起動可能に - Dynamic Copilot prompts on GitHub Docs (https://github.blog/changelog/2025-12-17-dynamic-copilot-prompts-on-github-docs)
組織でライセンスなしメンバーのプルリクにもCopilotコードレビューを適用可能に - Copilot code review now available for organization members without a license (https://github.blog/changelog/2025-12-17-copilot-code-review-now-available-for-organization-members-without-a-license)
GPT-5.1とGPT-5.1-CodexがGitHub Copilotで一般提供開始 - GPT-5.1 and GPT-5.1-Codex are now generally available in GitHub Copilot (https://github.blog/changelog/2025-12-17-gpt-5-1-and-gpt-5-1-codex-are-now-generally-available-in-github-copilot)
GPT-5.1-Codex-MaxがGitHub Copilotで一般提供開始 - GPT-5.1-Codex-Max is now generally available in GitHub Copilot (https://github.blog/changelog/2025-12-17-gpt-5-1-codex-max-is-now-generally-available-in-github-copilot)
GitHub CopilotでGPT-5.2が一般提供開始 - GPT-5.2 is now generally available in GitHub Copilot (https://github.blog/changelog/2025-12-17-gpt-5-2-is-now-generally-available-in-github-copilot)
Bitbucketの2025年まとめと今後の予定 - The 2025 Year in Review (and what’s coming soon) (https://www.atlassian.com/blog/bitbucket/the-2025-year-in-review-and-whats-coming-soon)
Gemini 3 Flash：企業向けの高速・高効率モデル - Introducing Gemini 3 Flash: Intelligence and speed for enterprises (https://cloud.google.com/blog/products/ai-machine-learning/gemini-3-flash-for-enterprises/)
ForresterのAIインフラ評価（Q4 2025）でGoogleがリーダーに - Google named a Leader in The Forrester Wave™: AI Infrastructure Solutions, Q4 2025 (https://cloud.google.com/blog/products/compute/forrester-wave-ai-infrastructure-solutions-q4-2025-leader/)
Cluster Director が一般提供開始 - Automate AI and HPC clusters with Cluster Director, now generally available (https://cloud.google.com/blog/products/compute/cluster-director-is-now-generally-available/)
BGM: yuhei komatsu (https://dova-s.jp/_contents/author/profile446.html)
音声: Google Cloud Text-to-Speech AI (https://cloud.google.com/text-to-speech)