OTA(Over the Air) Deployment enables you to install your built apps(.ipa/apk) via HTTPS.
The steps to install apps via this method are as follows:
Download the .ipa file to your device or icloud.
Upload the .ipa to any such site which create a shareable installation link using the uploaded .ipa file
For the above step there are site installonair.com free from where you can get the installation link by uploading the .ipa file. I found the below one to be free, easy and reliable: https://www.installonair.com