We have listed several types of upgrades that are available and have included the reasoning behind each upgrade.

Magento 1.X to Magento 2.X

The motivation to upgrade from Magento 1.X to Magento 2.X may be to get on the latest version of Magento and take advantage of the newer technology. The cost tends to be equal to building a new Magento site. The reason for this is that the 1.X theme, extensions and customizations cannot be just "migrated" over to 2.X. It's technically a new build which includes a new 2.X Magento theme. The cost savings over building a new site is that the database can be migrated over with Magento's migration tool to 2.X and, if the requirements all remain the same, saving time without having to do another deep discovery of requirements. At this stage of an upgrade it's worth considering what extensions you really need to move to 2.X. Doing a refresh on the frontend store design including adding responsive design if it was not on the 1.X site.

Magento 1.X to Adobe Commerce

In this upgrade path the reason may be that your Magento 1.X store is maxed out with some capabilities. By upgrading to Adobe Commerce, you take advantage of not only the new 2.X platform but also the benefits of Adobe Commerce. This cost tends to be almost equal or slightly higher as building a new Magento site. The reason for this is the same as with upgrade to Magento 2.X.

Magento Enterprise 1.X to Adobe Commerce

In this upgrade path the reason may be that your store is ready for a major improvement or you simply want to take advantage of the new Adobe Commerce platform. The cost tends to be equal to building a new Magento site for the same reasons as above.