Programmable Web has been retired yet is still linked in one of the slides

[This](https://rubenverborgh.github.io/WebFundamentals/web-apis/#web-api-growth) slide still links to https://www.programmableweb.com/.

However according to Wikipedia:
On February 3, 2023 Mulesoft announced that after 17 years in operation, it had shut down Programmable Web.[[7]](https://en.wikipedia.org/wiki/ProgrammableWeb#cite_note-7)