Hello there,
As you already have a running store the upgrading process should be done in a proper fashion so that the business reputation and customer experience be seemless even after the migration process done.
>We are a team of 140 developers out of which 30 developers are on Magento and all of them are certified Magento experts having average experience of 6 years.
> There are more than 180+sites migration process successfully done by this same team.
Kindly provide the following information for quick look:-
1. Code access of the site. Root access would be preferred. We would download one copy and set up in our local server for checking all the used modules and their version availability.
2. List of customisations done on the modules. After migration process all the customization would go washed away.
We would either save the customizations (as much as feasible) or redevelop those sections.
3. List of meta tags or On page SEO document. Since Magento-1 follows css but Magento-2 Less , so the majority of the front end need to be reseveloped of the solution so those onpage tags need to be maintained.
4. List of urls those are used for marketing, so that we can maintained the same url and url structure so that , your existing marketing dont go waste.
Look forward to hearing from you.
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Regards,
Sumantra
* Please consider this price and time line as ball park one**