What command is used to start services defined in a Docker Compose file?

The command used to start services defined in a Docker Compose file is "docker-compose up." This command reads the docker-compose.yml file in the current directory and starts all the services defined within that file. It also creates the necessary networks and volumes as specified.

By default, "docker-compose up" will run the services in the foreground, allowing you to see their logs in real time, but it can also be run with the "-d" option to start the services in detached mode. This means the containers run in the background, freeing up the terminal for other commands.

Furthermore, using this command ensures that the containers are started with the correct configurations, dependencies, and desired states that were specified in the Docker Compose file, streamlining the process of orchestrating multi-container Docker applications.