Case studies

How we saved the client

Real engagements, anonymised where the client asked. Each one follows the same shape: the problem, what we did, what changed.

Holiday Weather · Travel media · AWS configuration & scaling

Holiday Weather: off Heroku, onto serverless AWS — and 4× faster at the tail

An undocumented Java "microservice" estate on Heroku became a TypeScript serverless platform on AWS. Median response time fell from 334 ms to 207 ms and the slowest request from 2.3 s to 0.3 s.

334 → 207 msmedian response
2.3 s → 0.3 sslowest request
−77%p90 latency
Roxhill Media · Media intelligence · Development

Roxhill Media: a next-generation media database for 8,000+ PR professionals

Everlution builds and runs the Roxhill platform — journalist search, social-media insight, alerts and the Pinpoint analytics tool — used by more than 8,000 PR professionals to find the right journalist at the right time.

8,000+active users
100+webinars in the archive
100,000+articles ingested and analysed daily
TB-scalesearch indexes
Slipcase · Insurance media · Development

Slipcase: from a 46 to a 91 performance score by fixing the images

Slipcase's SEO team wanted faster pages. Images were 60–70% of every download, so we put FileJet — our image and asset optimisation service — in front of them. Time to interactive fell from 16.3 s to 4.2 s in one release.

46 → 91Google performance score
16.3 → 4.2 stime to interactive
−71%image weight on the home page
Metastreet · GovTech · private housing regulation · Development

Metastreet: from a wild idea to the standard tool for property licensing across London

What started as an ambitious idea — replace paper-heavy council licensing with an AI-assisted platform — is now the tool more than 20 councils use to license and regulate private housing. Everlution's project managers, architects, developers and security team built and secured it.

20+councils on the platform
−50%licence processing time
10 minfor a simple licence
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