Following retirement, there will be no further bug fixes or enhancements to Version 3.x, and new deployments to js.arcgis.com will cease. Additionally, technical support for Version 3.x will no longer be available.
Yes, the retired Version 3.x API will remain hosted on our Content Delivery Network (CDN), ensuring that existing apps relying on this API do not break. However, developers should be aware that browser updates may introduce new issues, which won’t be addressed by API patches.
What action should I take to mitigate the impact of this product retirement?
When will ArcGIS Web AppBuilder retire?
ArcGIS Web AppBuilder Developer edition will retire in July 2024, aligned with the retirement of Version 3.x API. Web AppBuilder in ArcGIS Online will retire in the fourth quarter of 2025, while Web AppBuilder in ArcGIS Enterprise will be deprecated immediately and retired by the first half of 2025.
Esri provides various resources to facilitate the migration process:
Fundamentals: Core concepts guide explaining fundamental programming patterns and architecture.