* YC gets:
- $2M more to invest in startups (more money can't hurt and they clearly enjoy what they do)
- Sequoia investing in YC makes YC that much more trustworthy in the eyes of a lot of potential investees and potential acquirers of their startups. Also YC's reach in terms of potential acquirers and potential round 2 investors probably increases.
- It gets YC startups almost all the advantages of having Sequoia as an investor without the dilution of a large Sequoia investment (eg: opens a lot of doors for the YC startups to get their products in the marketplace.)
* In return for $2M, Sequoia gets:
- YC acting as a filter / very high quality pipeline for them
- Early access to YC deals (though not exclusive)
- Most likely, great returns on the $2M itself in the long term.