all systems (are) go
Everything is ready, so a certain task can proceed as planned. The phrase was popularized by the 1960s Space Race, as it was said before rockets were launched. I just checked with the boss, and all systems are go to make the announcement today.
Is all systems go Meaning?
A state of readiness for immediate action: “Your proposal has been approved, so it's all systems go.” This phrase originated in the 1960s during the heyday of space flight and referred to the launching of missiles and other space vehicles.
Are Go means?
be a go. To be going to happen; to be still slated to take place or be carried out.
