Should you build a community or use existing ones first?

The decision to build a community is one that many startups make before asking whether there are already communities where their target customers are active, and whether participating in those communities first would be faster, cheaper, and more effective than building something new.

If your target customer already gathers in specific places, whether LinkedIn groups, industry Slack communities, Reddit forums, or professional associations, those communities already have the membership, the culture, and the network effects that a new community would take years to build.

Participating in existing communities as a genuinely useful member, contributing expertise, answering questions, and being visible in the context where your customer already spends time, is one of the most efficient early-stage marketing activities available. It requires no platform investment, no community management overhead, and no effort to recruit members. The audience is already there.

Building your own community makes most sense when no existing community adequately serves the specific need your community would address, when the act of hosting the community creates a genuine strategic advantage, or when your product is the infrastructure around which the community naturally forms.

A company whose product is used by a specific professional community may be the natural host for that community's discussions. A company with a strong point of view on a topic may be able to build a community around that point of view that serves a purpose no existing community does. A company whose customers benefit significantly from connecting with each other has a product-community fit that makes building worthwhile.

The most practical starting point for most startups is to be an active, valuable presence in two or three existing communities while using that presence to develop a clear understanding of what a purpose-built community would need to offer to be genuinely different and genuinely better.

If the answer to that question is unclear, the existing communities are the right place to be. If there is a clear gap that a new community would fill, you have both the research and the initial audience to start building with.