Service as Architecture for SaaS Applications

Service as architecture is a new architectural way of developing application. The maturity level is pretty high, with widespread adoption in many, many vinters. It andeceral candidates to be deliverate micro services and reuced across the different sas applications one may have. If you had a monalythic application, how do you go aboard breaking it up? And i can walk through some of the aspects that you're to pay attention to.