Let's see this nice Tips to use PCF for Dynamics 365 On premise v9.1. Indeed, PCF is officially only supported for Online version of D365, but with this quick unsupported tip you could use it either on on premise version.
When developing a Portal with Power Apps Portal, you'll reach a point, where you want to have your developments in a source control or where you want to deploy your portal to a production environment. It's possible with Power Apps Portal source code with Visual Studio Code and Power Platform CLI.
It's always good to use D365 API calls when dealing with Ribbon's rules. But what about long running calls, you have do it asynchronously to not stuck the ribbon load. Let's see this trick about : Dataverse Use Async Promise in ribbon enable rule
Dynamics 365 Developer Toolkit was a very useful tool for CRM developers, nowadays the new Power Platform Tools for Visual Studio will replace it and it's a good news ! With a lot of new features. Come discover it on this article !
Dataverse PCF control for N:N relationship and muti-lookup : find here a full guide and a ready to use PCF that could help you on your projects to manage NN and lookups in a more user friendly way.
Let's see how to deal with Dynamics 365 2 minutes plugin time out workaround. This article describe the possibilities for both on premise and online version.
Here is a very interesting new feature to improve the user experience on Model Driven Apps. It is about being able to use panels on the right side and to embed all kinds of web content. Come and read this article: PowerApps Side Panes Tutorial
You must surely know the possibilities of tracing in D365 with the TracingService, but did you know that it is now possible to use Azure tracing? Here is an article on the subject: Dataverse Plugin telemetry with Azure Application Insights