➼ Preparation phase - This stage consists of setting up all the internal processes properly.
➼ Pre-ICO - This phase involves an official announcement of the ICO and marketing it efficiently.
➼ ICO - Selling of tokens to investors and building support for the venture occurs in this stage.
➼ Post-ICO - Efforts on developing a robust product to be hosted on the blockchain and permitting exchanges to list your tokens would happen at this stage.

Read further to know more - https://dev.to/saanajane/how-to-launch-an-ico-steps-behind-to-launch-an-ico-3im2