Deploying newly added webcontrol is much complicated than deploying SSRS.
I hope microsoft will simplify it on the next version of AX.
this guide below is only for newly addded webcontrols.
if you already done the steps below, and want to update your webpage by using webcontrol, just right click on web controls AOT, and select deploy. It will replace the old web page with the new web page.
here is the steps for deploying webcontrols :
3. after you deploy web content managed , you will get two new object on AOT,
Web Urls (Web -> Web Menu Items -> URLs), and Web Page Definition (Web -> Web Files -> Page Definitions) , Right click on web page definitions , select “Deploy Elements”, right clicks on web urls, and select “Import Pages”
4. Restart di IIS with IISRESET on your sharepoint server , see the reference post below
6. To check the newly added custom webcontrol, just copy paste your Default Enterprise portal URLS (System Administration -> Setup -> Enterprise portal -> Websites) and webcontrol urls (from Web Urls Properties) to web browser.
another guide to add to quick launch sidebar :