CDN allows users to load Lightning Experience and other apps faster by enabling content delivery network (CDN) to serve the static content for Lightning Component framework.

To use first enable it:

1. From Setup, enter Session in the Quick Find box, and then select Session Settings.

2. Select the checkbox for Enable Content Delivery Network (CDN) for Lightning Component framework.

3. Click Save.

Follow the steps below to assign Permission Set Groups to Users :

1. In the Permission Set Group detail page, click Manage Assignments.

2. Select each user who you want to assign the group to, and then click Assign.

3. Click Done.

4. To remove a user from the permission set group assignment, select the user name, and click Remove Assignments.

5.…

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Improve user productivity and data quality with lookup filters. Lookup filters are administrator settings that restrict the valid values and lookup dialog results for lookup, master-detail, and hierarchical relationship fields.

To Enable Enhanced Lookups follow the steps below:

1. From Setup, enter Search Settings in the Quick Find box, then select Search Settings.

2. In the Lookup Settings area, select the objects for which you want to enable enhanced lookup functionality.

3. Click Save.

There are limitations which I have discussed below as follows:

1. You can't use special date values, such as “Today” or “This Month,” in lookup filter criteria. 2. You can't delete fields that are referenced in an active lookup filter.

3. You can't change the field type of fields referenced by an active lookup filter.

4. You can add up to 10…

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You can use apex:param tag.

Use Dataflow Editor, a point-and-click interface, to build your dataflow logic from scratch. Add transformations to determine what source data to use, how to transform that data, and which datasets to load the results into.