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Thursday, May 21
 

11:30am PDT

Rebuilding King County’s Open Data Platform for the Cloud Era
Thursday May 21, 2026 11:30am - 12:00pm PDT
407-408
King County has undertaken a major modernization of its King County GIS Open Data portal to improve reliability, enhance user experience, and transition away from aging on premise infrastructure. The previous Open Data site was built on an older Esri Configurable App and depended on datasets stored on a server scheduled for retirement in June 2026—along with several datasets that will also be decommissioned at that time. To meet these challenges, King County redesigned the site using Esri’s Hub Initiative and migrated all content to new, hosted layer views in ArcGIS Online.
This presentation will walk through the technical and organizational steps involved in rebuilding the King County GIS Open Data site, including content redesign, data retirement and redirect strategies, and approaches for ensuring continuity of service during system and dataset retirement. The session will highlight the communication and outreach efforts used to keep internal and external users informed throughout the transition. Additionally, challenges to sharing hosted feature layer views through a hub site will be discussed. Attendees will gain practical insights into modernizing an enterprise Open Data environment while minimizing disruption to their stakeholders.
Speakers
avatar for Thomas Ryan

Thomas Ryan

Principal IT Engineer, King County
Tom is a Principal IT Engineer at King County's GIS Center. His work includes developing custom web application to support GIS data, metadata, and property reporting. Previously he worked at Kitsap County, Apple, and the City of Seattle. He graduated with a Bachelor’s in Geography... Read More →
avatar for Mary Ullrich

Mary Ullrich

IT Engineer - Senior, King County
Mary is a Senior IT Engineer at the King County GIS Center with 26 years of experience. She specializes in Web GIS administration, interactive GIS applications, and coaching GIS users through the intricacies of GIS software. Her work has included GIS database design, analysis, mapping... Read More →
Thursday May 21, 2026 11:30am - 12:00pm PDT
407-408
  Government, Open Data
 
2026 WA GIS Conference
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