After you deploy your contract, you still can change some of the configurations, but not everything. Also, you will need to interact with blockchain and pay for transactions if you want to change any contract information.
These are information you can't change after deployment, so if you want to change these information, you will need to deploy the smart contract.
In other words, except these ones, you never need to redeploy smart contract to change configurations.
Presale max supply
Enable/disable features (public sale/presale/advanced features)
(Advanced) Free claim contract address
(Advanced) Burn to mint contract address
After deployment, your contract management will look slightly different and you will see the following menu:
Overview: Overview of the contract
Sale: Public sale/presale information
Payout: Payout/royalties information
Advanced: Configure advanced features if you enabled any of the features
Deploy: Redeploy your contract from here if needed
Airdrop: Gift/airdrop your tokens
Withdraw: Withdraw your funds
Minting: Configure your mint button or mint page
Reveal: Reveal your art
We will walk you through a couple of things you can do after deployment.