{WGII SPM D.2; WGIII SPM E.1, WGIII SPM E.2}
Barriers to feasibility would need to be reduced or removed 
to deploy mitigation and adaptation options at scale. Many 
limits to feasibility and effectiveness of responses can be overcome 
by addressing a range of barriers, including economic, technological, 
institutional, social, environmental and geophysical barriers. The 
feasibility and effectiveness of options increase with integrated, 
multi-sectoral solutions that differentiate responses based on climate 
risk, cut across systems and address social inequities. Strengthened 
near-term actions in modelled cost-effective pathways that limit global 
warming to 2°C or lower, reduce the overall risk to the feasibility of the 
system transitions, compared to modelled pathways with delayed or 
uncoordinated action. (high conﬁdence) {WGII SPM C.2, WGII SPM C.3, 
WGII SPM C.5; WGIII SPM E.1, WGIII SPM E.1.3}
Integrating ambitious climate actions with macroeconomic 
policies under global uncertainty would provide benefits 
(high confidence). This encompasses three main directions: 
(a) economy-wide mainstreaming packages supporting options to 
improved sustainable low-emission economic recovery, development 
and job creation programs (Sections 4.4, 4.5, 4.6, 4.8, 4.9) (b) safety 
nets and social protection in the transition (Section 4.4, 4.7); and 
(c) broadened access to ﬁnance, technology and capacity-building 
and coordinated support to low-emission infrastructure (‘leap-frog’ 
potential), especially in developing regions, and under debt stress 
(high conﬁdence).