Test and launch your eCommerce site
You must properly test the e-commerce site before launching it to your customers. Every button and link on the site must function properly. Even 404 error web pages should be developed in accordance with the theme.
Test to check whether you can add items to the cart and accept payments. The majority of systems will allow you to test payment processing without charging your credit card. Check to see that all emails are being delivered to the correct inboxes once a transaction is completed or denied. Last but not least, examine how your site appears and functions on mobile devices. If feasible, test the site's performance in several web browsers. You are ready to launch after you've tested and double-checked everything, from product descriptions to category pages. Announcing the launch of your e-commerce site using social media, guest posts on major retail blogs in your niche, influencer marketing, and email lists. You may also use paid advertising on Facebook, Google, and other platforms if you have the funds.