Extend Microsoft Dynamics 365 on the client


Updated: November 29, 2016

Applies To: Dynamics 365 (online), Dynamics 365 (on-premises), Dynamics CRM 2016, Dynamics CRM Online

This section contains information about changes developers and customizers can make to extend Microsoft Dynamics 365 (online & on-premises) in the clients provided for Microsoft Dynamics 365 -- the web application, Microsoft Dynamics 365 for phones, and Microsoft Dynamics 365 for tablets -- by using JavaScript and web resources. These clients are designed to allow you to add extensions that can be applied for all clients rather than each one separately.

Client extensions can provide a very rich and responsive experience for users because the code runs on their device. However, critical business logic should not be applied only by client-side scripts. Unlike extensions that are applied on the server, client extensions can’t apply business logic for data entering the system by other means, such as integrations with other systems, custom clients, or data import.

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