Has anyone seen meaningful lift from SaaS or B2C affiliate programs?

I have tried, but its hard.

Thanks, Chandra. Were you promoting your own product via an affiliate network, or promoting other's brands/products across your channels?

It all depends on your product, service, and target markets. If you have a very broad audience of potential customers with a low average price for your product/service, this approach might work. However, if your audience is more specific with a narrow target, you are less likely to see results. In any case, affiliate marketing is only the primary sales channel in about 1% of cases. Most often, it is used as a supplementary channel when other sales channels are already operating at maximum capacity.