In a world where social media platforms dictate the visibility of brands and how consumers interact with them, algorithms are becoming the main players in the digital arena. Understanding the evolution of these algorithms is no longer optional, but essential to deliver results. From Facebook in the 2010s to TikTok adapted to user behavior in 2025, the way content reaches audiences has undergone radical transformations.
In this article, we explore the evolution of social media algorithms and how brands can adapt their strategies to stay relevant. We will provide multiple examples, annual comparisons, but also practical recommendations.
What is a social media algorithm and why does it matter?
Algorithms are sets of automated rules and models that decide what content is displayed to each user. They take into account factors such as previous interactions, the type of content preferred, the time the user is active, and even the device used.
For brands, this means that not every post gets in front of your target audience. Algorithms act like virtual gatekeepers: they decide who sees what, when and how.
Imagine that the algorithm is an exclusive event organizer, carefully selecting guests for each table, according to everyone’s preferences and history. Or that this is a DJ at a private party who changes the songs according to the reactions on the dance floor. If a song catches, they leave it longer, if people sit on the sidelines, they change it quickly.
In other words, algorithms don’t serve the same menu to everyone. They adjust each user’s experience based on the signals collected, which means brands need to be more accurate, relevant, and attractive in how they build their messages.
Evolution of algorithms: Facebook, Instagram, TikTok, LinkedIn
In the early years, Facebook rewarded brands with high organic reach. Over time, the algorithm began to favor “meaningful” interactions and content from friends and family. In 2018, Facebook announced that it would prioritize “posts that create conversations” (The Guardian, 2018).
Now, in 2025, the most representative aspect is the fact that Facebook uses Artificial Intelligence to personalize content according to user behavior. What’s more, it calculates a “relevance score” for each post and uses it to determine the order in which content appears in your feed. The goal is to display what they consider most valuable to the user, interspersing recommendations and various types of content for a balanced experience (Hootsuite, 2025).
Initially, Instagram displayed posts in chronological order. Since 2016, it has introduced an algorithm that prioritizes content based on interactions. Between 2022-2024, the focus fell on Reels and original content. Thus, in 2024, Meta introduced an “originality score”, penalizing recycling and rewarding authentic creativity. You can learn more about this evolution of Instagram in our blog post.
In recent months, Adam Mosseri (Head of Instagram), has announced on his Instagram account @creators, several changes and relevant information about how the Instagram algorithm actually works.
In this way, in 2025, the platform emphasizes original content, penalizing frequent reposts and favoring small creators who offer authentic and relevant material. Real engagement, meaningful comments, post saves, and direct messages have a bigger impact than likes or manipulative tactics.
In parallel, hashtags have become less relevant, being replaced by AI systems that analyze user behavior to deliver personalized content. In addition, SEO and keywords in the description play an increasingly important role in the visibility of posts. Also, the number of views has become the primary performance metric, and carousels are now prioritized in the feed.
Instagram’s algorithms are different for each segment of the platform, as Adam Mosseri points out: “People tend to search for close friends in Stories, use Explore to discover new creators and content, and Reels for entertainment.” For this reason, Instagram customizes each tool according to your actions on the platform.
TikTok
TikTok has changed the rules of the game with an algorithm that prioritizes discovery, not social relationships. “For You Page” is based on the behavior of each user, bringing together criteria such as: viewing time, type of content, sounds used. In 2025, the algorithm became more personalized, using AI to understand not only what you watch, but also what you ignore (Media A La Carte, 2024).
Thus, unlike other platforms, where you mainly see the posts of those you follow, on TikTok most users discover new content from unknown creators.
For this reason, the first 3 seconds of a clip are critical: TikTok encourages quick “hooks”, direct questions, final frames offered at the beginning or a fast-paced edit. The algorithm also favors content created specifically for the platform, authentic and adapted to TikTok style, not reposted or recycled.
Moreover, search optimization (TikTok SEO) is becoming increasingly important: keywords in the description or even in the narrative voice of the video help the algorithm understand the topic and share it more effectively. In short, TikTok is not just an entertainment platform, but an ecosystem where creativity, precision and intelligent interaction are the key to visibility.
LinkedIn works based on an algorithm that prioritizes professionally relevant content and quality interactions. In 2025, LinkedIn’s algorithm has become more selective: impressions per post have fallen by 65%, but engagement has increased by 12%, a sign that the platform favors valuable content and real conversations.
Carousels and PDFs perform almost twice as well as average, while video reach has dropped significantly. AI-generated comments are penalized, while authentic comments, over 10-15 words, can double or even triple visibility. Pre- and post-publication activity (such as comments and reactions) significantly increases reach. Ideal posts are clear, short, visually supported, and distributed in formats that the algorithm appreciates.
What do all these changes mean for brands?
Adapting to modern algorithms is no longer optional, but essential for the digital survival of brands.
Authenticity is the new digital currency of exchange
In a world where audiences quickly detect superficial content or recycling of ideas, authenticity becomes a real competitive advantage. Brands that communicate honestly, show vulnerability, or offer a humanized perspective on their business create deep connections. It is no longer enough to be “present online”; You need to be real, relevant, and consistent.
Interaction is not just metric, it’s strategy
Comments, message replies, polls, story Q&A, and live sessions are all touchpoints that power the algorithms. Content that sparks conversations or emotions – whether funny, controversial, or inspirational – is much more likely to be shared organically. The more time the audience spends on a post, the more the algorithm sees it as “worthy” to promote.
Short video, big impact
On platforms like Instagram, TikTok, and YouTube Shorts, the first three seconds are crucial. The algorithm “scans” how quickly you manage to capture attention and what reactions you generate. Brands that manage to tell a clear, creative story adapted to the vertical video format are the ones that dominate the audience’s attention. Content should not only be short, but also visually engaging, dynamic, and easy to understand, even without sound.
Continuous adaptation is the only constant
Algorithms are constantly evolving, and what worked last year may be irrelevant today. Brands need to be agile, constantly test new formats and messages, analyze performance data, and adjust their strategies. A/B testing is becoming an essential tool, and marketing teams need to stay connected to the news of the platforms to avoid losing visibility.
Recommendations for brands
- Create original content, not recycled content.
- Invest in short and interactive video formats.
- Use polls, questions, and live sessions to drive engagement.
- Constantly monitor algorithm changes.
- Adapt the content to the specifics of each platform.
- Use AI and analytics to measure performance and adjust quickly.
Algorithms are not enemies, but filters that reward brands that understand the pulse of the audience and create relevant content. A marketing agency that understands the subtleties of these algorithms becomes a valuable partner for any business that wants to thrive online.
Instead of fighting algorithms, it’s time to understand them, anticipate them, and use them to our advantage.
