So funny to See sone Folks Talking about the tech Stack when Hosting is the only Problem to solve

RE How to make my website exist for 100 years?

Get it archived in Wayback machine and other web archive sites ....

You might be interested in Arweave or IPFS:

Arweave network is like Bitcoin, but for data: A permanent and decentralized web inside an open ledger. [0]

The InterPlanetary File System (IPFS) is a decentralized protocol, hypermedia, and peer-to-peer (P2P) network for distributed file storage and sharing. The shadow libraries Anna's Archive and Library Genesis host books via IPFS. [1]

[0] https://www.arweave.org/

[1] https://en.wikipedia.org/wiki/InterPlanetary_File_System

20 years - google doc with backups in your email and wherever your taxes and medical stuff is, and printed copy with your home records

40 years - print and bind the google doc in 20 years, store it with their stuff when they leave the house.

60 years - publish the book buy a bunch of copies and distribute

100 years - it needs to be a very good book

Simpler is better. Ideally, it should be a static site, and hostable on any domain.

Failing that, choose technologies that have been around for a while. PHP, Ruby, and Java have been around for 20+ years, and are still going strong. There is no hope that anything touching Node or npm will run in a year.

1. Defend against format obsolescence. Prefer plain-text formats, or at least ones that can be mostly-understood by humans, like markdown or semantic XML. (And not, say, PDFs.) For audio-visual stuff, prefer the simplest kinds of highly standardized and common formats.

2. If you need a website, prefer a static site generator. If you need a dynamic site, periodically export a static version.

3. Don't count entirely on the hosting service, store offline copies (as a standard zip file) alongside other content of interest to heirs, such as a will. Distribute redundant copies to relatives.

Wordpress.com offers 100-year plans. Hosting + domain is $38,000 or domain only is $2,000.

https://wordpress.com/100-year/

Write a book, send a copy to the Internet Archive, upload the digital version. Leave your kids the ISBN or Archive.org item identifier. Donate $2/GB uploaded if you can afford it.

You could also have the Internet Archive crawl your site to preserve it if the above is too much trouble, with it being accessible through Wayback.

https://help.archive.org/help/how-do-i-make-a-physical-donat...

https://help.archive.org/help/uploading-a-basic-guide/

https://hackernoon.com/the-long-now-of-the-web-inside-the-in...

https://news.ycombinator.com/item?id=46611593