Re: nodes and data centres, the tiers refer to various qualities of the data centre. You can find a description of Tiers here: phoenixnap.com/blog/data-center-ti...
When looking for data centres, many different individuals and groups have their nodes hosted in many different countries. You can see a map and list of countries of existing nodes here: stats.xdc.org
Most are hosting their nodes at VPS providers. You will find many VPS providers online and as an organisation you will need to figure out which one(s) fit your needs with regards to infrastructure, uptime/reliability, cost, and jurisdiction (majority are not in Singapore as you will see from the link above)
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Re: nodes and data centres, the tiers refer to various qualities of the data centre. You can find a description of Tiers here:
phoenixnap.com/blog/data-center-ti...
When looking for data centres, many different individuals and groups have their nodes hosted in many different countries. You can see a map and list of countries of existing nodes here: stats.xdc.org
Most are hosting their nodes at VPS providers. You will find many VPS providers online and as an organisation you will need to figure out which one(s) fit your needs with regards to infrastructure, uptime/reliability, cost, and jurisdiction (majority are not in Singapore as you will see from the link above)