Hi,

As you might know, some of our Ultimate Forms web parts in Office 365 come in two flavours:

• Original app parts - this version uses the technology that was originally available with SharePoint apps. App parts are basically frame that display information from the app within the host site. Being frames, they are not able to intergrate seamlessly within the page, for instance, they do no resize properly. This technology is considered deprecated and the app parts only exist for backward compatibilty.
• Client-side (SPFX) web parts - the new technology that uses a JavaScript framework to render advanced web parts directly within the browser. These web parts are installed as part of our Ultimate Forms Extensions app. We are only continuing to develop these web parts.

Calendar is one of the web part that is available in both version. Until now, the client-side version was in preview mode and could only access SharePoint data sources. Starting today, it can also access Exchange Online and DBs!

NOTE: you must upgrade Ultimate Forms Extensions to version 1.2.0.0 or up to be able to access Exchange Online. Once you install the new version, you need to grant the app access to Microsoft Graph Calendar client API. You can do that under SharePoint Administration -> Advanced -> API access.

When you add or update a new Exchange Online data source, you will be prompted to provide administrative permission grant to access your Exchange Online. It's a security feature intended to prevent unauthorized users from being able to set up calendars. Make sure to log in as a global administrator to be able to save your Exchange data source.

To access DB data sources, you need to provide an ODBC connection string for your database. Note that the database must be accessible from the outside of your organizations, by our servers. You might need to add an exception to your firewall rules.