Tldr: Large file transfer today is still remarkably slow, especially across large geographic distances. Turns out you can build protocols that are much more efficient than FTP (or other TCP based approaches) for moving data but that it is hard! What made this difficult for us was the lack of tooling: It is difficult to test, and simulate new protocols. If your users regularly move a lot of data yo
![How we built a new, fast file transfer protocol.](https://cdn-ak-scissors.b.st-hatena.com/image/square/b6b7c1b77cedc94891148e7f4eafaee5af032d94/height=288;version=1;width=512/https%3A%2F%2Fuploads-ssl.webflow.com%2F603985f3b15be38f8432971b%2F623e6c138f73079887f3b09a_bandwidth_example.png)