Scaling Translations at Spotify – Spotify Engineering : Spotify Engineering


September 15, 2022

Printed by Tommy Tynjä (Senior Engineering Supervisor and Undertaking Engineering Lead) and Martiño Prada Díaz (Director, Localization)

Final yr, we added help for 36 new languages to our merchandise in a single go, for a complete of 62 languages. This text describes how we delivered on such an immense localization effort at Spotify. We known as the mission Scaling Translations.

The enterprise case

We consider that localization is essential for partaking with our customers the world over. Business friends have indicated that translations have been certainly one of their strongest drivers of development over time. Once we first began fascinated with Scaling Translations, Spotify was out there in 26 languages. By rising the variety of supported languages from 26 to greater than 60, we believed we might broaden our attain and affect these customers whose native languages weren’t supported at the moment. We might additionally broaden our whole addressable market and make our product extra accessible to an much more numerous person base.

The software program engineering efforts wanted

To help the enterprise case, it was important to know what was required on the tech facet to drag off the hassle. 

First, we wanted to evaluate our technical panorama. We requested ourselves quite a lot of questions — what capabilities exist at the moment to help our ambitions? What are the ache factors inside our present structure? How will these ache factors be amplified when the variety of supported languages has greater than doubled? What new issues can we foresee each technically and organizationally? What capabilities do we have to sustainably help all of those languages, each quick and long run?

Whereas including help for brand new languages is nothing new at Spotify, traditionally it’s been executed in help of launching our companies in a brand new nation or area, with out adapting and creating the general structure. Including only one new language has not been as easy as one would possibly suppose. Spotify’s tech stack is giant and complicated, and it has grown considerably over time because of hypergrowth. Conway’s regulation manifests itself in our structure. 

The trouble behind Scaling Translations was unprecedented — we wanted to verify we had a stable technique, so our customers might have the absolute best expertise. We wanted to create a totally new method to the issue.

We spent two months on a quest to search out solutions to the questions we had initially of our journey. It concerned speaking to software program engineers, product managers, engineering managers, colleagues on the enterprise facet — all throughout the corporate. We additionally needed to roll up our sleeves and dig by means of quite a few totally different supply code repositories, seek the advice of system diagrams, and analyze manufacturing metrics and telemetry. After concluding our deep dive, we summarized our findings in a complete report — the 25-page write-up lined intensive particulars of current techniques, their interactions, use circumstances, enterprise metrics, what capabilities we wanted to develop, and the hassle it might take. We proposed a path for the way to notice the enterprise case and product imaginative and prescient utilizing know-how, and we additionally included a number of thought-about, however discarded, alternate options for the mission for added context.

As soon as the technical effort had been outlined, we secured the required funding and staffing. Six months forward of the scheduled launch date, we employed a small, devoted engineering staff to deal with this mission. This was the primary time we’d had devoted engineers work alongside our localization staff on a joint mission to launch new languages. The engineering staff labored relentlessly to handle the numerous ache factors and required enhancements outlined within the technical scoping doc, collaborating with different engineering groups and enterprise stakeholders throughout the corporate. 

Efforts included defragmenting the prevailing tech stack, automating mundane linguistic quality-assurance duties for our cellular apps, and utilizing refined automation to replace 30+ backend companies en masse to efficiently combine help for the brand new languages. At our 2021 Spotify Stream On occasion, we introduced the help of 36 new languages. Our staff was prepared to start out rolling out the brand new languages the next day, and we efficiently launched the mission on time, inside funds, and with nice high quality.

The localization effort

Up to now, launching in a brand new market with a brand new language took considerably extra time. To concurrently launch 36 languages in six months (whereas sustaining and delivering an excellent person expertise), we honed in on six key areas: 

  1. Making a minimal viable product: We stripped down the product to what issues most to customers in native markets. Right here at Spotify, we love the concept of delivering shortly, studying from outcomes, iterating, and increasing, if wanted.
  2. Staying nimble: This can be a philosophy that ruled the entire course of. We had to consider the way to hit the bottom operating with a minimal variety of sources and as little ramp-up time as attainable. We needed to make quite a lot of exhausting choices to permit for progress and to keep away from paralysis by evaluation. 
  3. Establishing sturdy partnerships with distributors: We included our distributors within the course of from day one. They supplied market and language analysis and help in constructing the enterprise case. They participated in strategic choices nicely earlier than manufacturing began and constructed linguistic groups and high quality processes shortly and effectively. Most significantly, they shared our method and philosophy for this mission. We supplied them with context and visibility, enabling them to know what we had got down to accomplish and the way. Their help and funding within the course of was vital to the success of the mission. 
  4. In search of cross-functional help: To have the ability to ship on the work, we wanted the help of dozens of groups at Spotify. Among the largest challenges included figuring out the groups on which we had dependencies, negotiating buy-in and aligning with their roadmaps, and increasing the nimble philosophy to those groups.
  5. Balancing flexibility with prioritization: As consciousness concerning the mission elevated, extra individuals introduced forth questions and expressed curiosity in incorporating their areas of the product within the initiative. Whereas we welcomed this, we needed to make robust calls on scope based mostly on prioritization. The fact was that scope adjustments have been a part of the method all through, and we subsequently ended up with a number of learnings about what an MVP actually meant whereas nonetheless offering a high quality expertise to our customers. The important thing to creating this mission occur was getting issues off the bottom and offering our stakeholders with as a lot visibility as attainable to get them on board. 
  6. Communication: For a mission of this dimension and complexity, clear and well timed communication focused accordingly to a given viewers was paramount; it was the frequent thread within the profitable execution of the above parts. We arrange devoted Slack channels to streamline communication, established an everyday assembly cadence for the vital workstreams, and held day by day localization staff stand-ups devoted to this mission alone, which allowed us to keep up a wholesome stage of visibility and nimbleness in collective resolution making. We created a devoted Jira dashboard for useful bug reporting from localization testing, which helped streamline the method of triaging and fixing bugs.   


Scaling Translations proved to have a optimistic enterprise affect on our person base and drastically decreased the share of customers not served their most popular language — whereas additionally making Spotify a extra numerous and inclusive product from a language perspective. The initiative proved that difficult conventional methods of fascinated with worldwide enlargement and product launches could be a worthwhile effort with the intention to transfer quicker as a enterprise. In reality, difficult the established order is attainable to do whereas conserving a excessive stage of high quality within the remaining product and offering customers with a culturally related expertise. It additionally proved to us the worth of being nimble, brave, and laser-focused on fixing an important issues shortly whereas iterating with quick suggestions loops and tight scope and stakeholder administration.

This mission was an enormous problem for all concerned. It required a change of mindset and in methods of working, and thru a really stable enterprise case with alignment throughout the group and utilizing know-how to our benefit, it turned out to be an enormous success. The mission has now opened the doorways for brand new globalization alternatives at Spotify that have been al



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