I'm implementing AMP in my website. I would like to call all the external scripts through Google Tag Manager Custom HTML tags. Unfortunately it's available only in Web version of container and not in AMP version of container. How can I add custom HTML & Javascript tags in AMP Container through Google Tag Manager?
Custom HTML Tags are unavailable in GTM AMP Containers by design. From AMPs documentation:
script tags are prohibited except the mandatory script tag to load the AMP runtime and the script tags to load extended components. Non executable script tags such as ld+json tags are allowed.