--- title: Why Glance migrated its document database to Spanner description: Glance migrated its document database from Azure Cosmos DB to Spanner to improve database operations and lay the groundwork for better data science... canonical: https://daily.dev/posts/why-glance-migrated-its-document-database-to-spanner-wku5vqamv twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Why Glance migrated its document database to Spanner | daily.dev og:description: Glance migrated its document database from Azure Cosmos DB to Spanner to improve database operations and lay the groundwork for better data science... og:url: https://daily.dev/posts/why-glance-migrated-its-document-database-to-spanner-wku5vqamv og:image: https://api.daily.dev/og/posts/wku5VQAMv.png og:image:alt: Why Glance migrated its document database to Spanner og:image:width: 1200 og:image:height: 630 og:locale: en --- [Google Cloud](https://daily.dev/sources/gcp) [Read post](https://api.daily.dev/r/wku5VQAMv) # [Why Glance migrated its document database to Spanner](https://api.daily.dev/r/wku5VQAMv "Go to post") Glance migrated its document database from Azure Cosmos DB to Spanner to improve database operations and lay the groundwork for better data science capabilities. Spanner provides non-relational scale coupled with relational semantics and allows for seamless schema updates. Glance used tools like Key Visualizer and change streams during the migration process. [#database](/tags/database "Check all #database posts")[#backend](/tags/backend "Check all #backend posts")[#sql](/tags/sql "Check all #sql posts")[#gcp](/tags/gcp "Check all #gcp posts")[#spanner](/tags/spanner "Check all #spanner posts") Mar 04, 2024•6m read time•From [cloud.google.com](https://api.daily.dev/r/wku5VQAMv "cloud.google.com") [](https://api.daily.dev/r/wku5VQAMv "Go to post") Table of contents [A bit of background](https://api.daily.dev/r/wku5VQAMv "A bit of background")[Building features faster with seamless schema updates](https://api.daily.dev/r/wku5VQAMv "Building features faster with seamless schema updates")[Migrating to Spanner in phases](https://api.daily.dev/r/wku5VQAMv "Migrating to Spanner in phases")[Simplifying database operations for more agile operations](https://api.daily.dev/r/wku5VQAMv "Simplifying database operations for more agile operations")[Want to learn more about Spanner?](https://api.daily.dev/r/wku5VQAMv "Want to learn more about Spanner?") 20 Impressions Comment Bookmark Copy Share your thoughtsPost [](https://daily.dev/sources/gcp) [Google Cloud](https://daily.dev/sources/gcp "https://daily.dev/sources/gcp") Google Cloud Platform provides a suite of cloud computing services for building, deploying, and mana... 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