The new waves wall at Cloudflare’s Lisbon office sits beside the Radar Display of global Internet insights, with the 25th of April Bridge overlooking the Tagus River in the background.
It’s exciting to see waves in Portugal now playing a role in keeping the Internet secure, especially given Portugal’s deep maritime history.
The installation honors Portugal’s passion for the sea and exploration of the unknown, famously beginning over 600 years ago, in 1415, with pioneering vessels like caravels and naus/carracks, precursors to galleons and other ships. Portuguese sea exploration was driven by navigation schools and historic voyages “through seas never sailed before” (“Por mares nunca dantes navegados” in Portuguese), as described by Portugal’s famous poet, Luís Vaz de Camões, born 500 years ago (1524).
Anyone familiar with Portugal knows the sea is central to its identity. The small country has 980 km of coastline, where most of its main cities are located. Maritime areas make up 90% of its territory, including the mid-Atlantic Azores. In 1998, Lisbon’s Expo 98 celebrated the oceans and this maritime heritage. Since 2011, the small town of Nazaré also became globally famous among the surfing community for its giant waves.
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Nazaré’s waves, famous since Garrett McNamara’s 23.8 m (78 ft) ride in 2011, hold Guinness World Records for the biggest waves ever surfed. Photos: Sam Khawasé & Beatriz Paula, from Cloudflare.
Portugal’s maritime culture also inspired literature and music, including poet Fernando Pessoa, who referenced it in his 1934 book Mensagem, and musician Rui Veloso, who dedicated his 1990s album Auto da Pimenta to Portugal’s historic connection to the sea.
As Cloudflare’s CEO, Matthew Prince, said recently, this new wall of entropy began with an idea back in 2023: “What could we use for randomness that was like our lava lamp wall in San Francisco but represented our team in Portugal?”
The original inspiration came from wave motion machine desk toys, which were popular among some of our team members. Waves and the ocean not only provide a source of movement and randomness, but also align with Portugal’s maritime history and the office’s scenic view.
However, this was easier said than done. It turns out that making a wave machine wall is a real challenge, given that these toys are not as popular as they were in the past, and aren’t being manufactured in the size we needed any more. We scoured eBay and other sources but couldn't find enough, consistent in style and in working order wave machines. We also discovered that off-the-shelf models weren’t designed to run 24/7, which was a critical requirement for our use.
Artistry to create wave machines
Undaunted, Cloudflare’s Places team, which ensures our offices reflect our values and culture, found a U.S.-based artisan that specializes in ocean wave displays to create the wave machines for us. Since 2009, his one-person business, Hughes Wave Motion Machines, has blended artistry, engineering, and research, following his transition from Lockheed Martin Space Systems, where he designed military and commercial satellites.
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Timelapse of the mesmerizing office waves, set to the tune of an AI-generated song.
Collaborating closely, we developed a custom rectangular wave machine (18 inches/45 cm long) that runs nonstop — not an easy task — which required hundreds of hours of testing and many iterations. Featuring rotating wheels, continuous motors, and a unique fluid formula, these machines create realistic ocean-like waves in green, blue, and Cloudflare’s signature orange.
Here’s a quote from the artist himself about these wave machines:
“The machine’s design is a balancing act of matching components and their placement to how the fluid responds in a given configuration. There is a complex yet delicate relationship between viscosity, specific gravity, the size and design of the vessel, and the placement of each mechanical interface. Everything must be precisely aligned, centered around the fluid like a mathematical function. I like to say it’s akin to ’balancing a checkerboard on a beach ball in the wind.’”
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The Cloudflare Places Team with Lisbon office architects and contractor testing wave machine placement, shelves, lighting, and mirrors to enhance movement and reflection, March 2024.
Despite delays, the Lisbon wave machines finally debuted on March 10, 2025 — an incredibly exciting moment for the Places team.
Some numbers about our wave-machine entropy wall:
50 wave machines, 50 motion wheels & motors, 50 acrylic containers filled with Hughes Wave Fluid Formula (two immiscible liquids)
3 liquid colors: blue, green, and orange
15 months from concept to completion
14 flips (side-to-side balancing movements) per minute — over 20,000 per day
Cloudflare’s servers handle 71 million HTTP requests per second on average, with 100 million HTTP requests per second at peak. Most of these requests are secured via TLS, which relies on secure randomness for cryptographic integrity. A Cryptographically Secure Pseudorandom Number Generator (CSPRNG) ensures unpredictability, but only when seeded with high-quality entropy. Since chaotic movement in the real world is truly random, Cloudflare designed a system to harness it. Our 2024 blog post expands on this topic in a more technical way, but here’s a quick summary.
In 2017, Cloudflare launched LavaRand, inspired by Silicon Graphics’ 1997 concept However, the need for randomness in security was already a hot topic on our blog before that, such as in our discussions of securing systems and cryptography. Originally, LavaRand collected entropy from a wall of lava lamps in our San Francisco office, feeding an internal API that servers periodically query to include in their entropy pools. Over time, we expanded LavaRand beyond lava lamps, incorporating new sources of office chaos while maintaining the same core method.
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A camera captures images of dynamic, unpredictable randomness displays. Shadows, lighting changes, and even sensor noise contribute entropy. Each image is then processed into a compact hash, converting it into a sequence of random bytes. These, combined with the previous seed and local system entropy, serve as input for a Key Derivation Function (KDF), which generates a new seed for a CSPRNG — capable of producing virtually unlimited random bytes upon request. The waves in our Lisbon office are now contributing to this pool of randomness.
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Cloudflare’s LavaRand API makes this randomness accessible internally, strengthening cryptographic security across our global infrastructure. For example, when you use Math.random() in Cloudflare Workers, part of that randomness comes from LavaRand. Similarly, querying our drand API taps into LavaRand as well. Cloudflare offers this API to enable anyone to generate random numbers and even seed their own systems.
Photo of the view from our Lisbon office, featuring ceiling lights arranged in a wave-like pattern.
Entropy also inspired the design ethos of our new Lisbon office, given that the wall of waves and the office are part of the same project. As soon as you enter, you're greeted not only by the motion of the entropy wall but also by the constant movement of planet Earth on our Cloudflare Radar Display screen that stands next to it. But the waves don’t stop there — more elements throughout the space mimic the dynamic flow of the Internet itself. Unlike ocean tides, however, Internet traffic ebbs and flows with the motion of the Sun, not the Moon.
As you walk through the office, waves are everywhere — in the ceiling lights, the architectural contours, and even the floor plan, thoughtfully designed by our architect to reflect the fluid movement of water. The visual elements create a cohesive experience, reinforcing a sense of motion. Each meeting room embraces this maritime theme, named after famous Portuguese beaches — including, naturally, Nazaré.
We partnered with an incredible group of local Portuguese vendors for this construction project, where all the leads were women — something incredibly rare for the industry. The local teams worked with passion, proudly wore Cloudflare t-shirts, and fostered a warm, family-like atmosphere. They openly expressed pride in the project, sharing how it stood out from anything they had worked on before.
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Our amazing third-party team and internal Places team, proudly rocking Cloudflare shirts after bringing this project to life.
Next, we have several name options for this new wall of entropy. Help us decide the best one, and register your vote using this form.
The Surf Board
Chaos Reef
Waves of Entropy
Wall of Waves
Whirling Wave Wall
Chaotic Wave Wall
Waves of Chaos
If you’re interested in working in Cloudflare’s Lisbon office, we’re hiring! Our career page lists our open roles in Lisbon, as well as our other locations in the U.S., Mexico, Europe and Asia.
Acknowledgements: This project was only possible with the effort, vision and help of John Graham-Cumming, Caroline Quick, Jen Preston, Laura Atwall, Carolina Beja, Hughes Wave Motion Machines, P4 Planning and Project Management, Gensler Europe, Openbook Architecture, and Vector Mais.
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I am thrilled to embark on this journey to run Product and Engineering at Cloudflare, driving forward the mission of helping build a better Internet.
While I was a graduate student at University of Illinois, the university introduced the Mosaic web browser to students. In addition to being super easy to install and use, it displayed pictures next to text for the first time. This may not seem impressive today, but back then it felt like a magical step forward.
This simple but powerful upgrade opened up the once niche user base from academics to the masses, transforming the world wide web to become an Internet phenomenon. Since then, I’ve always sought to be part of teams that worked on transformational technologies, including Software-as-a-Service, cloud computing, and AI. Innovation is the life blood of every technology company. To this day, I’m inspired by building products and technology that get adopted at mass scale.
The world is in a very interesting moment for technological innovation: the AI landscape is uncharted and developing at an exponential rate; the urgency for enterprises to reduce tech debt and reliance on legacy applications is at an all time high; multi-cloud deployments are becoming a reality for optimal performance and global scale; and high performance connectivity is table stakes. Cloudflare finds itself in a compelling position at the intersection of these key themes. We are uniquely poised to drive disruption and empower customers to do the same as they transform their businesses, and I’m excited to use my experience to help move our mission forward.
In order to reach massive scale, platforms need to be extensible (i.e., they need to be able to grow easily). The best way to do this is by knowing your customers’ biggest pain points and improving the core experience while creating adjacent products that solve their most challenging problems. Combined with being obsessed with your customers getting value and having a deep understanding of how the technology landscape is evolving around you, it becomes a powerful growth strategy.
This was the approach that I took during my time at ServiceNow, and one of the reasons why we were able to build the product business from $1.5 billion to $10+ billion in annualized revenue.
Cloudflare’s connectivity cloud — an innovative cloud native platform of security, network connectivity, and developer solutions — provides a unique foundation for driving value, no matter the industry. I’m excited to help Cloudflare further grow and refine our product offerings, while ensuring they are purpose-built and scalable to meet the needs of our growing customer base. Together, we can create solutions that empower any organization to enhance its global online presence while maintaining security and performance at the forefront.
It was very clear as I met many amazing people at Cloudflare, including co-founders Matthew Prince and Michelle Zatlyn, that the team takes pride in solving deep technical Internet infrastructure problems while putting customers first. In addition to working with world-class product and engineering teams, I am looking forward to collaborating with the wider business, our partners, and our customers to realize the potential of Cloudflare's people, platform, and organic growth. I’m looking forward to helping build a better Internet with Cloudflare!
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Terima kasih atas langganan Anda!"],"posts.social_buttons.hackernews":[0,"Diskusikan di Hacker News"],"footer.diversity_equity_inclusion":[0,"Keberagaman, kesetaraan, & inklusi"],"footer.critical_infrastructure_defense_project":[0,"Proyek Pertahanan Infrastruktur Kritis"]}],"localesAvailable":[1,[[0,"en-us"],[0,"fr-fr"],[0,"de-de"],[0,"ja-jp"],[0,"ko-kr"],[0,"es-la"],[0,"nl-nl"],[0,"th-th"]]],"footerBlurb":[0,"Kami melindungi seluruh jaringan perusahaan, membantu pelanggan membuat aplikasi berskala Internet dengan efisien, mempercepat setiap situs web atau aplikasi Internet, mencegah serangan DDoS, menghalangi masuknya peretas, dan mendukung Anda dalam perjalanan menuju Zero Trust.
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Tiga bagian di Cloudflare: Programmer ke Direktur Teknologi ke Dewan Direksi
Hari ini, setelah lebih dari 13 tahun di perusahaan, saya bergabung dengan dewan direksi Cloudflare dan pensiun dari posisi penuh waktu saya sebagai Direktur Teknologi.
Kembali pada tahun 2012, saya menulis postingan singkat di situs pribadi saya dengan judul: Programmer. Postingan tersebut mengumumkan bahwa saya baru saja bergabung dengan perusahaan bernama Cloudflare (masih menggunakan huruf kapital “F”) dengan jabatan Programmer. Saya memilih jabatan itu sebagian karena itu adalah jabatan pertama yang pernah saya miliki, dan karena itu akan mencerminkan apa yang akan saya lakukan di Cloudflare.
Saya telah menghabiskan banyak waktu bekerja di perusahaan rintisan—dalam peran teknis dan kemudian manajerial—dan ingin kembali ke bagian yang benar-benar teknis yang paling saya sukai. Cloudflare memberi saya kesempatan itu, dan saya bekerja pada banyak sistem yang membentuk Cloudflare yang digunakan oleh banyak orang di seluruh dunia saat ini.
Malam saat kami menyelesaikan persiapan peluncuran stik Universal SSL dalam ingatan saya. Kami bermaksud menawarkan Universal SSL Pertama di Industri secara gratis, yang secara efektif akan menggandakan ukuran web terenkripsi dalam semalam, suatu hal yang besar di tahun 2014. Saya ingat salah satu pendiri ketiga Cloudflare, Lee Holloway, membungkuk di depan laptopnya untuk menyelesaikan kode. Tim tersebut telah mengerjakannya sepanjang akhir pekan, dan pada Minggu malam Lee mengumumkan “selesai.”
Menangani kesulitan
Mudah untuk memilih momen kesuksesan besar atau saat segala sesuatunya berjalan dengan sangat baik, dan Cloudbleed pada tahun 2017 mungkin tidak tampak seperti momen istimewa, tetapi momen itu membantu menunjukkan siapa kami. Ini menunjukkan bagaimana sebuah tim dapat bersatu di bawah tekanan yang intens, dan bagaimana kami dapat menetapkan standar ke depannya tentang cara perusahaan mengungkapkan dan membicarakan masalah keamanan. Saya pribadi menemukan bahwa panggilan Google Meet dapat terus berlangsung selama 24 jam dan tidur dalam potongan dua jam pun dimungkinkan.
Menjadi internasional dan terarah
Berasal dari Inggris, saya adalah anggota tim pertama yang berlokasi di luar Amerika Serikat. Saya harus membantu membangun kantor terbesar di luar AS: pertama, kantor Cloudflare di London dan kemudian kantor Cloudflare di Lisbon. Kedua kantor ini merupakan bagian besar dari jati diri kami saat ini, dengan Lisbon menjadi kantor pusat kami di Eropa.
Ketika COVID menghentikan pekerjaan kami di kantor, saya terkesan oleh tanggapan dari tim. Karena kami semua masing-masing menghadapi kesulitan yang berbeda-beda karena pandemi, kami terus bekerja bersama untuk memastikan bahwa Internet, yang diandalkan semua orang saat terkurung di rumah, berfungsi dengan andal dan aman.
Teknologi yang benar-benar berdampak
Memilih produk favorit akan seperti meminta seseorang untuk memilih anak kesayangannya, tetapi saya memiliki ketertarikan pada solusi WAF, DNS, dan DDoS Cloudflare karena saya secara pribadi mengerjakan sistem tersebut. Dan saya masih merasa perlu meminta maaf kepada tim WAF yang mengambil alih kode saya dan harus menghadapi satu skrip Perl yang tidak boleh disebutkan namanya!
Di luar produk ada sesuatu yang jauh lebih dalam: misi Cloudflare untuk membantu membangun Internet yang lebih baik. Saya sangat bangga dengan cara kami mendukung dan memajukan Internet itu sendiri melalui pekerjaan kami pada standar dan protokol terbaru. "Dan saya bahkan lebih bangga dengan peran yang kami mainkan melalui Project Galileo, The Athenian Project, dan Cloudflare for Campaigns.
Orang-orang
Setiap minggu Cloudflare mengadakan rapat perusahaan yang diakhiri dengan "Shoutouts," sebuah kesempatan untuk memberikan penghargaan kepada anggota tim yang telah bekerja keras. Keingintahuan dan empati merupakan dua nilai inti di Cloudflare, dan setiap minggu saya dikejutkan oleh seberapa sering kami memberikan penghargaan kepada tim yang mengucapkan terima kasih karena membantu penjualan, memperbaiki bug, menanggapi insiden, atau membantu membangun Cloudflare. Semangat tim itulah yang menjadikan Cloudflare tempat kerja yang istimewa.
Salah satu hal yang akan saya rindukan karena tidak bekerja di Cloudflare sehari-hari adalah kekuatan luar biasa dari setiap anggota tim. Saya telah belajar dari mereka selama 13 tahun berturut-turut!
Apa selanjutnya
Saat saya bergabung di perusahaan itu, timnya jauh lebih kecil! Kami beranggotakan 25 orang dan kini telah berkembang menjadi lebih dari 4.200 karyawan dan 15 lokasi di seluruh dunia. Seiring pertumbuhan kami, saya mengenakan banyak peran yang berbeda. Selama beberapa waktu saya memimpin bidang teknik, operasi, keamanan, dan bahkan TI. Dan, tentu saja, saya menulis untuk, dan mengedit, Blog Cloudflare selama bertahun-tahun. Seiring berjalannya waktu, kami merekrut banyak pemimpin hebat untuk menjalankan tim tersebut.
Namun peran yang tetap bertahan adalah Direktur Teknologi. Dan hari ini, kami umumkan bahwa, sebagaimana saya melepaskan jabatan Programmer (dan pemrograman yang menyertainya), saya melepaskan jabatan Direktur Teknologi (dan tanggung jawab peran tersebut) untuk cara baru untuk membantu Cloudflare tumbuh dan sukses, sebagai anggota dewan direksi.
Tahun lalu ketika saya memberi tahu Matthew bahwa saya berencana untuk pensiun, saya tidak menyangka akan ditawari posisi di dewan perusahaan. Merupakan kehormatan yang luar biasa dan langka untuk bisa naik pangkat dari seorang karyawan perusahaan (meskipun seseorang telah berada di sana sejak dekat dengan awal) hingga bergabung dengan dewan direksi. Saya benar-benar gembira dapat terus membantu Cloudflare tumbuh dan sukses dari sudut pandang yang sedikit berbeda.
Pada saat yang sama, Dane Knecht, yang hingga saat ini menjabat sebagai SVP Teknologi Baru dan Inkubasi, telah menjadi Direktur Teknologi kami. Dane bergabung hanya beberapa bulan setelah saya, dan memiliki posisi dan pengalaman unik untuk mengambil peran Direktur Teknologi. Kami telah bekerja sangat erat selama 13 tahun terakhir sebagai rekan sejawat, sehingga dalam banyak rapat sulit untuk membedakan peran kami. Saya cukup yakin Dane berdarah oranye Cloudflare, dan saya belum pernah melihatnya mengenakan kaus yang tidak bertuliskan Cloudflare. Dia telah menjadi bagian dari hampir setiap tonggak penting di Cloudflare. Dia sangat peduli terhadap perusahaan dan kesuksesannya; dia akan menjadi Direktur Teknologi yang hebat.
Rencana saya bukanlah pergi dan bekerja di tempat lain, atau memulai perusahaan baru. Saya bermaksud untuk tetap terlibat erat dengan Cloudflare dalam peran saya di dewan. Saya merasa sangat tersanjung dan bersyukur telah menjadi bagian dari pertumbuhan dan kesuksesan Cloudflare yang luar biasa, dan saya berharap dapat membantu perusahaan ini melanjutkan pertumbuhannya.
Satu bidang yang secara khusus ingin saya bantu adalah pekerjaan perusahaan di seluruh rangkaian produk AI. Kembali ke tahun 2002 (23 tahun lalu! sungguh!). Saya menulis program penyaringan email pembelajaran mesin sumber terbuka yang sangat populer (tidak menyebutnya AI saat itu) dan pada tahun 2004 mengerjakan cara untuk menangani apa yang terjadi ketika satu sistem AI digunakan untuk menyerang sistem lain. Di Cloudflare, kami telah menggunakan teknik pembelajaran untuk meningkatkan keamanan, memblokir bot, dan memprediksi bagaimana sistem kami seharusnya berperilaku dan berkembang. Masih banyak lagi yang harus dilakukan.
Seperti yang dikatakan salah satu pendiri, Michelle : kami baru saja memulai. Dan begitu juga saya.
Buka 1.1.1.1 dari perangkat apa pun untuk mulai menggunakan aplikasi gratis kami yang akan mempercepat dan meningkatkan keamanan Internet Anda.
Untuk mempelajari selengkapnya tentang misi kami dalam mendukung pengembangan Internet yang lebih baik, mulai di sini. Jika Anda sedang mencari arah karier baru, lihat lowongan kerja kami.
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