What should change for a software test in the Saas world?

In previous, the release cycle of on-premise product, it can take 6 months to 18 months to release a new version.  But in the Saas world, the release schedule was reduced to 2 months , even in

1 week.  So what should change as a software tester.   Here is some draft things from me.

1) Mindset change,   Learn by analogy ==> Think Efficiency.   Because  we don’t have much time on testing.   So we need to find out what should we spend on and what should not?

2) New tool adoption.   Need to adopt the CI, CD tool to reduce the release cycle.

3) efficacy  test case selection.