I want to build micro-SaaS but analyze: is micro-SaaS viable? Map micro-SaaS: development time, maintenance, MRR growth rate. Calculate: months to build vs. time to profitable vs. opportunity cost. Show me the micro-SaaS reality: takes months to build, slow MRR growth initially. Give me the SaaS strategy: if building, focus on these niches. Include: whether micro-SaaS is worth it, how long to profitability, and what success rate is.