Hello,
Greetings from Best1
To develop E-Commerce Seller Portal that will capable to handle 5,00,000+ products and 50,000+ seller the site database and code needs to be optimized properly with appropriate hosting server to be chosen. We recommend to go with Amazon server AWS.
As to launch it internationally you might have selected a proper domain name based on your criteria.
The document is reviewed by us and have understood it completely and we assure to develop the site features accordingly.
We are expertise in Magento, PHP, MySQL, CSS technology and can provide you the developer you are looking for from our talented and expertise developers at effective cost. The developers can work on the PayPal api, WordPress, CMS, PHP, MySQL, Ajax, JavaScript, HTML & CSS.
Best1 is professional and expertise team of expertise technocrats delivering their best to satisfy client by providing quality work with effective communication support since 12 years in IT sector. The project is very big and so i our bid accordingly suiting the project requirements as per attachment.
So kindly initiate project discussion so we can communicate further.
Regards,
best1