> It also requires specific hardware, not standard off-the-shelf SFP modules like normal FTTH deployments. What is a "normal FTTH" deployment? What percentage

> It also requires specific hardware, not standard off-the-shelf SFP modules like normal FTTH deployments. What is a "normal FTTH" deployment? What percentage of residential deployments are PON versus non-PON? Because I was under the impression that PON was the (vast) majority of residential fibre deployments, in houses and apartments/condos. And by 'standard OTS SFTP' do you mean Ethernet? Because the IEEE has their own PON standards, but also once you get outside the data centre, office building/tower, or campus, there are all sorts of 'different' technologies you tend to have to deal with WANs depending on distance. We recently switched ISPs at work, and our 10Gb link was a BiDi single-mode fibre and we were provided with a media convertor from which we connected our router-firewall. Depending on distance desired you may (>80km) have to start getting into coherent equipment or optics (CWDM, -ZR).