Archive of Our Own (AO3) is a platform that thrives on the creativity of its users, so there isn't a single 'ending' to fanfiction there—it's more like an ever-evolving library of stories. Some fics wrap up neatly with epilogues that tie every loose thread, while others leave readers hanging, begging for sequels that may never come. I've stumbled across everything from 500-word drabbles to million-word sagas, and the endings reflect that diversity. Some writers plan meticulously, dropping foreshadowing like breadcrumbs, while others let the story unfold organically, sometimes ending abruptly when inspiration fades.
What I love about AO3 is how endings can be collaborative, too. Readers suggest twists in comments, and occasionally, authors even write alternate endings based on feedback. It’s a living ecosystem where 'The End' is just a pause—someone might revive a dormant fic years later, or a reader’s passionate plea sparks a surprise update. My personal favorites are the open-ended fics that linger in your mind, making you imagine what happens next long after you’ve closed the tab.