I am creating a new lead capture form in cloud pages, but we are going to host it on our website and the user will not be entering his customer_id again. Is there any way we can pass the customer_id into the cloudpage everytime the link is clicked? Thank you so much.
Moving from comment.
If you are using cloud as an Iframe and If you are passing the customer_id as a parameter from the website to browser URL then cloud page can't able to capture the parameter. In this scenario you would need to pass the parameter in your iframe source like below:
<iframe src="cloudpageURL?customer_id=xyz" height="100%" width="100%"> </iframe>
If your scenario is like passing a parameter directly from a website to cloud page then cloud page can able to capture.
Lets say are passing URL like
Then add the below code in your cloud page to capture the parameter.
%%[ Set @Id = RequestParameter("customer_id") other operations... ]%%
Let me know if this helps!