Quick Answer
An audience engagement platform is software that helps event organizers collect, display, and encourage real-time participation from attendees. At conferences, it brings together social media posts, live Q&As, polls and user-generated content into one feed that appears on screens, websites, or event apps. This helps keep attendees active and connected throughout the event.
An audience engagement platform is a software tool that turns passive conference attendees into active participants. Instead of sitting through talks one after the other, attendees post, vote, ask questions, and see their contributions appear on event screens, microsites, or live streams as they happen. The platform sits between your audience's devices and your event displays, pulling content and interactions into one managed, moderated feed.

The setup is easier than it sounds. Event organizers connect the platform to relevant social channels (Instagram, X/Twitter, LinkedIn, TikTok), choose a hashtag or direct submission method, and set what appears on screen. The platform collects incoming posts, checks them for inappropriate content, and displays the approved posts automatically.
Most platforms can handle at least four types of input:
The outputs vary: a social wall on a large screen, an embedded feed on the event website, content inside a live stream, or a display in a venue lobby.
A social wall is a feature of a platform used to engage with a broader audience. A social wall collects and displays social media posts from a hashtag or account. An audience engagement platform is even better. It includes polls, Q&A tools, forms where people can submit content directly, ways for moderators to manage the platform, and analytics. It also allows people who don't use social media to submit content.
The main difference is that a social wall shows what attendees are posting, while an audience engagement platform encourages them to post.
There are three things that always get in the way of people being able to participate in a conference when there isn't a tool that's specifically made for that purpose.
First, content disappears. Attendees post on their personal profiles, where the organizer has no access, control, or ownership of the content. Once the event is over, it's over.
Second, participation stays passive. A keynote with 500 attendees and no way for people to interact is still a broadcast. People check their phones, tune out, and forget what was said by lunch.
Third, hybrid events are divided. Attendees watching remotely can watch a stream, but they can't participate along with those in the room. The two audiences have very different experiences.
An audience engagement platform addresses all three. It puts all the content together in one place, gives people a way to take part that you can see, and lets those attending virtually have the same experience as those in-person.
The most effective event setups tend to share the same patterns:
How Walls.io approaches this
Walls.io collects content from over 15 social media sites and accepts submissions directly from attendees who don't have social media accounts. Participation isn't limited to those with personal profiles. Moderation, display, and analytics are all in the same place. See how it works →
Brands using social media walls at events
BMW Group held a 500-person internal conference with a live social wall under the hashtag #BMWWOLCON. This encouraged attendees to share their work and photos as they were making them.
Google added social walls to live streams for big events that were a mix of in-person and online. These walls showed the same conversation during breaks between parts of the event, so people at home and in-person could share the same experience.
Cisco connected more than 8,000 employees across 22 locations and 7 time zones at a single Leader Day event. They did this by using a social map wall. This wall showed participation by location. It also created a sense of global community.
DMEXCO added social walls to one of Europe's biggest digital marketing trade fairs. This included a big display in the main hall that showed ongoing hashtag activity throughout the event.
Tomorrowland built a virtual island for its first digital music festival and placed a social wall as a central engagement feature. The social wall collected attendee posts under #Tomorrowland from Facebook, Instagram, and X/Twitter.
→ Social Media for Hybrid Events à la Google
→ Follow the Sun and the Cisco Social Media Wall by Walls.io
→ Tomorrowland Virtual Event Social Feed Integration
→ What is a social media aggregator?
→ How do I embed a social media feed on a website?
→ How do I set up a live social media wall for an event?