Bing Webmaster Tools lets you improve your site's performance in search engines and general SEO performance.
To connect your website to Bing Webmaster Tools:
Go to https://www.bing.com/toolbox/webmaster and Sign In, or create an account with Bing Webmasters.
Once you sign in, you will be transferred to a new page that is your Bing Dashboard. There, click ADD YOUR SITE.
You will be redirected to a new page, in which you will be asked for your Website's URL and Sitemap.
The URL is the address of the website (domain name) and the Sitemap of the website is your full website list.
To find your Sitemap: in the Website Editor click Pages, find the Homepage, click the gear icon next to it and select SEO.
To find your Website URL: in the Website Editor, click Domain, you'll see the URL link under Your Existing Domain.
Copy both the Website URL and the Sitemap and paste the links, then click ADD.
Bing will ask you to verify your website using one of the 3 methods they have. To verify your SITE123 website, you need to select and copy the HTML Tag and use the code which you'll need to insert in the necessary section on your website.
Go to your Website Editor, click Settings, and select Plugins from the drop-down list. Click Manage, then Add New Plugin and add Bing Webmaster Tools.
In the Application ID field, enter the code snippet from the HTML Tag you got from Bing Webmaster Tools. Insert the code, Enable it, and click Save.
Publish your website to update it with the changes you've made.
Once you Publish the website, go back to Bing Webmaster Tools and click the VERIFY button for the HTML Tag.
You will be redirected to the new Dashboard of your Bing Webmaster Console. This completes the verification of your website with Bing Webmaster Tools.