Creating Dynamics 365 trial https://trials.dynamics.com/ , Its asking business identity means need a business domain.
Learn More on Domain : https://docs.microsoft.com/en-gb/microsoft-365/admin/get-help-with-domains/what-is-a-domain
Creating Dynamics 365 Trail from Power Apps:
2. Click on pricing on navigation . It will open below screen.
3. Click on Try free. Opens the Power Apps Trial Instance creation screen.
4. Enter Mail ID and Click on Next.
5. Click on Set Up Account.
6. It will asks some basic information. fill the details and click Next.
7. Verify the mobile number.
8. Enter the Business name and Check Availability.
9. Checking the Business Name, Click on Next.
10. Enter the Business Identity information. and Click on Sign Up.
11. Click on Go to SetUp .
12. It navigates to Microsoft 365 admin center – Home .
13. Now Open https://trials.dynamics.com/ to create Dynamics 365 Trial Instance.
14. Click on Sign up here.
15. Click on Sign In.
16. Click on Continue to trial Sign Up.
17. Enter the ID which we got with Power Apps (in my case admin@pegapowerapps.onmicrosoft.com). and Click on Sign Up.
18. Click on Create.
19. Setting Up the Instance.
20. All set the Dynamics 365 Trial Instance is Created.
21. Dynamics 365 trial instance is ready to work.
Thanks for reading!
Happy Power365ing !!!
Srinath Pega 
Very good article. I certainly appreciate this website. Keep it up!
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Thank you!
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Thank you!
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I really like your blog.. very nice colors & theme. Did you create this website yourself or did you hire someone to do it for you? Plz respond as I’m looking to design my own blog and would like to know where u got this from. cheers
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Thank you! I developed myself!
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I adore your wp theme, wherever did you down load it from?
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I’m really enjoying the design and layout of your website. It’s a very easy on the eyes which makes it much more enjoyable for me to come here and visit more often. Did you hire out a developer to create your theme? Great work!
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Thank you! I done myself.
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