Enabling Multi-Region Data Systems at NotionLearn how we built multi-region data infrastructure—spanning search, analytics, AI, and event logging—to ensure customer data is processed and stored entirely within its home region.Justin Lee, Adam HudsonEngineering, NotionHow Notion catches breaking schema changes before they reach productionHow we built a CI guardrail to catch breaking schema changes automatically, and some of the design decisions that shaped it.Maya LekhiEngineering, NotionUpdating the design of Notion pagesIn recent months, we decided to revisit our page designs and apply our design rules to them more consistently. Paul VelleuxProduct Designer, NotionHow we built security into Custom AgentsA look inside the security model behind Custom Agents, and what we learned testing it at scale.Sean Keenan, Jacob BrackettTwo years of vector search at Notion: 10x scale, 1/10th costThis is the story of how we scaled our vector search infrastructure by 10x while simultaneously reducing costs by 90 percent over the past two years.Preeti Gondi, Mickey Liu, Nathan Louie, Calder Lund, Jacob SagerBalancing cost and reliability for Spark on KubernetesToday, we’re excited to open-source Spot Balancer in collaboration with AWS, a tool that helped us reduce Spark compute costs by up to 90% while maintaining reliability.Justin LeeSoftware Engineer, NotionMeet Scruff, Security's New AI TeammateSee how Notion’s security team built Scruff, an AI teammate that automates alert triage, speeds investigations, and scales with on-call demand.Nishil ShahSoftware Engineer, NotionHow we made Notion available offlineOffline Mode was Notion's most requested feature for years, but building it meant solving tough technical challenges around our unique block architecture. Here's the architecture and data model that made it possible.Raymond XuSoftware Engineer, NotionNotion’s hosted MCP server: an inside lookEarlier this year, we got requests for a Notion MCP server that would let AI agents work directly with Notion workspaces. Here’s how we built it, from our initial open-source experiment to today’s hosted solution with custom tools designed specifically for AI workflows.Kenneth SinderSoftware Engineer, NotionSpeed, Structure, and Smarts: The Notion AI WayHow we combine AI with structured data to deliver a best-in-class work product.Sarah Sachs