What a poster session is, how ePosters changed the format, and what running one takes:…
Walk into the exhibit hall on the second morning of a medical society's annual meeting and you'll find rows of boards, each holding one study. A resident stands beside her poster on catheter infection rates, waiting. An attending stops, reads the methods panel for ninety seconds, and asks how she handled the confounder in table two. That conversation is the whole point of the format.
A poster session runs research presentations in parallel. One platform session gives a single speaker the room for fifteen minutes. The same ninety minutes of poster time can put three hundred studies in front of attendees, with the discussion happening one-on-one at each board. For the presenter it is often a first time presenting anywhere, which is why associations care about the format more than its production budget suggests. The poster hall is where the next generation of members shows up.
The classic version is a printed sheet, roughly four feet by three, pinned to a corkboard: title, authors, background, methods, results, conclusions, references, all readable from six feet away. Presenters stand with their posters during assigned sessions and answer questions.
The ePoster (or electronic poster) moved the same content to a screen. Some meetings rent monitor banks for the hall. Others publish the posters to an online gallery that attendees browse from a phone or laptop, before, during, and after the meeting. Most large scientific meetings now run some combination: a physical or screen-based hall onsite, plus a gallery that remote attendees and members who skipped the trip can open from anywhere.
The digital format fixed problems paper could never solve. A printed hall has no search. Nobody can find "all posters mentioning GLP-1" by walking rows of boards, and once the hall closes, the research is gone unless someone photographed it. A gallery is searchable in the way members now expect everything to be searchable, and it keeps working after the meeting ends.
From the attendee side the format looks simple. The program team sees a different picture, because the poster track touches nearly every system the meeting runs on.
Submissions. Posters arrive through the same call for papers as platform abstracts, usually in far greater volume. A society accepting 120 talks might accept 900 posters. Late-breaking windows add a second wave weeks before the meeting.
Review. Committees score poster abstracts, often in multiple rounds, with conflict-of-interest rules and category chairs. Acceptance decisions feed the program: each accepted poster needs a number, a session assignment, and a spot in the hall or gallery.
Author logistics. Every accepted author has to deliver something: a PDF, a formatted file, sometimes a short narration. They also have to grant permission to publish, disclose funding and conflicts, and occasionally withdraw. Chasing nine hundred authors through a submission portal built for forty talks is where poster programs go sideways.
The session itself. Presenters get assigned times. Judges need score sheets for award categories. Signage has to route attendees to the right rows, or the right screens.
Afterward. Someone asks whether the posters can stay available to members, and whether anyone can tell the education committee which posters drew attention. If the answer lives in a third-party tool that shuts off with the contract, the answer is usually no.
Two shifts are worth watching if your association runs a large poster program.
The first is that the gallery is becoming the primary surface, not the backup. Attendees increasingly meet a poster on their phone first, at the meeting or from home, and the physical hall becomes the place to find the author rather than the content. That flips the requirements: search quality, mobile rendering, and author Q&A start to matter more than board dimensions.
The second is that poster programs are being pulled onto the same rails as the rest of the meeting. When posters run on a separate vendor from the abstracts they came from, every late acceptance and withdrawal becomes a reconciliation exercise between systems. Program teams are consolidating so that the poster track shares the call for papers, the review workflow, the speaker records, and the published program with everything else. In Sessionboard, a poster is a session type on the program graph: accepted abstracts flow to author uploads (with consent and disclosures collected at the door), and the published gallery reads from the same record the committee and the agenda use, so nothing is retyped and nothing drifts.
A poster session, then, is two things at once. For attendees it is the most personal format the meeting offers. For the program team it is a volume problem attached to a compliance problem, and the tooling decides which of those two experiences dominates the year.
A poster session is a conference format where researchers present their work as a single large visual summary instead of a talk. Attendees walk the hall (or browse a gallery online), stop at posters that interest them, and speak with the author directly. Associations use poster sessions to give early-stage and student research a place on the program when speaking slots run out.
An ePoster is the digital version of a conference poster, shown on a screen or in an online gallery rather than printed on paper. The format carries advantages paper never had: attendees can search the full poster hall, zoom into figures, ask the author questions asynchronously, and open the poster again after the meeting ends.
A platform (or oral) session gives one presenter the room and a time slot. A poster session runs dozens or hundreds of presentations in parallel, with conversation happening one-on-one at each poster. Most scientific programs accept far more posters than talks, which makes the poster track the largest share of presented content at many association meetings.
Yes, and at medical and scientific meetings they often carry most of the presented research. Posters are where residents, students, and early-career members first present, so the quality of the poster experience shapes how the next generation of members sees the association.
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