Creating International Website | ccTLD vs. Sub Directories

Hey All,

I just finished reading Niel Patel's guide for setting up international targeting & his article gives some pretty good insight into which direction to go in.

I just wanted to reach out to see what everyone in the SEO community thinks as I've seen both the sub-directories, sub-domains, & ccTLD redirection done for languages & regions.

Currently, I have "domain.com" (eCommerce) which caters to every country / language / region with only English content. Although, I've been getting a ton of traffic from Australia & the UK which I'd ideally like to create into landing pages (I have an idea for fulfillment).

Which structure is ideal? ccTLD's? Sub-Domains? or Sub-Directories?

Any & all help is greatly appreciated!!

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Thanks!