It was pitched as a way of adding support for Ethereum-style smart contracts, which in turn could facilitate new DeFi protocols as well as NFTs; the original Dogecoin blockchain lacked smart-contract support, since it was a fork of Litecoin, which in turn was an early clone of Bitcoin, the original blockchain launched in 2009 – several years before Ethereum came along, ushering in the new era of smart contracts.
Source: https://www.coindesk.com/tech/2023/12/15/polygon-stops-work-on-edge-used-to-build-dogechain-as-focus-turns-to-zk/?utm_medium=referral&utm_source=rss&utm_campaign=headlines