Make sure you're on the radar of biz-dev/partnership/product-management people at your potential acquirers. Check through your existing professional contacts for potential warm intros. And, your customers – product managers at the target orgs may already be trial users of your product. Perhaps even put some contact method in your throwaway profile here, so anyone at AWS/Google/Azure/etc seeing this can reach out.
If you're not naturally a sales-y networker/glad-handler/negotiator, if you have a trusted friend/colleague who is, you might want to bring them in as an advisor/junior-partner, incentivized to find & close a deal. Of course, this may not be natural for a solo builder like yourself, and includes some danger of bringing in a value-subtractor. But, someone with the right incentives, industry knowledge, & negotiating prowess could pay for their 'commission' many times over.
If you're not naturally a sales-y networker/glad-handler/negotiator, if you have a trusted friend/colleague who is, you might want to bring them in as an advisor/junior-partner, incentivized to find & close a deal. Of course, this may not be natural for a solo builder like yourself, and includes some danger of bringing in a value-subtractor. But, someone with the right incentives, industry knowledge, & negotiating prowess could pay for their 'commission' many times over.