If you’re looking to get more familiar with telecom terms, TIA, the Telecommunications Industry Association, has an alphabetical glossary here:
https://standards.tiaonline.org/resources/telecom-glossary
The FCC allows you to search their site for carrier connectivity. If you go to our data center page https://infinitekb.com/data-centers/ and find one of the data center addresses like 600 West 7th Street, Los Angeles, CA, 90017, for example, you’ll see a list of telecom providers with fiber in the area.

NTIA has a great explainer .pdf of telecom / broadband terms you can download from their website:
https://broadbandusa.ntia.doc.gov/sites/default/files/2022-12/Introduction_to_Broadband_and_High_Speed_Internet_FINAL_0.pdf

To learn more, see the Dark Fiber page, or click on each category of broadband offering below:
MetroE Advanced Private Line (MAPL)
Ethernet Virtual Private Line (EVPL)
Since network performance is critical, particularly for online Software-as-a-Service, gaming, video streaming, or other use cases, here are key terms associated with network performance: