eCommerce thank you page or Success page is displayed after successful placement of order, which acknowledges the customer about the purchase.
One thing to note here is that the visitors reaching the success or thank you page are the qualified buyers that have already purchased your product. Therefore, it provides a great opportunity to build a long-term relationship with the already convinced customers and grow your business.
There are plenty of ways to optimize eCoommerce thank you page for multiple purposes — it can be optimized for increasing social media awareness, newsletter subscription count, cross selling products, and more.
I have curated a list of ways businesses can optimize eCommerce thank you page. You can read it here: https://meetanshi.com/blog/best-practices-for-e-commerce-thank-you-page/