LED light strip

I’d like to install LED light strips in different rooms of my house for both white and color effects depending on what we are doing.

I thought it would be a good idea to buy a roll of strip lights and cut to length for each application.

Is this a good idea or,should I just buy one kit per application? Buying a roll stumps me on how I can power them and integrate them into HA.

Any suggestions and ideas are welcomed.

Look up WLED if you are using addressable LED strips and are into DIY.