You need an ExpressRoute gateway that supports up to 10 Gbps, availability zones, FastPath, and minimizes cost. Which gateway SKU should you deploy?

The ErGw3AZ SKU is the correct choice because it supports up to 10 Gbps throughput, offers zone-redundancy (indicated by "AZ") for high availability, and includes FastPath by default. While ErGw3 also supports 10 Gbps and FastPath, it lacks zone redundancy. ERGw1AZ provides zone redundancy but has a lower throughput limit (2 Gbps). ERGw2 has a higher throughput (2 Gbps) than ERGw1AZ but does not offer zone redundancy and has a lower throughput than required. The "AZ" suffix denotes availability zone support, which is a key requirement for high availability.