Two Architectures, One Goal
A trade copier does one thing: replicate trades from one account to another. But how it does that matters enormously. The two dominant architectures are:
- Local EA (Expert Advisor) — Software installed inside MetaTrader that runs on your computer or a VPS.
- Cloud-based — A web service that connects to your broker accounts remotely and handles copying on its servers.
Architecture Comparison
| Aspect | Local EA | Cloud-Based |
|---|---|---|
| Where it runs | Your PC or VPS | Provider's cloud servers |
| Requires MetaTrader open? | Yes, 24/7 | No |
| Requires VPS? | Yes ($25-50/mo) | No |
| Platform support | MT4 or MT5 only | MT4, MT5, cTrader, DXtrade, Match-Trader, TradeLocker |
| Cross-broker copying | Difficult (same terminal required) | Native support |
| Uptime management | You | Provider |
| Update impact | MetaTrader updates can break EAs | No impact |
| Setup complexity | High (install EA, configure, VPS) | Low (web dashboard) |
Why Local EAs Are Losing Ground
The VPS Tax
Running a trade copier EA reliably requires a VPS — $25-50/month for a decent one. Over a year, that's $300-600 added to your copier costs. Cloud copiers eliminate this entirely.
Single-Platform Lock-In
An MT4 EA can only copy to MT4. Want to add an MT5 or cTrader account? You need an entirely different solution. Cloud copiers work across all platforms natively.
Reliability Issues
EA-based copiers fail when MetaTrader disconnects, the VPS reboots, the EA crashes, or MetaQuotes pushes an update. Each failure means missed trades. Cloud copiers are managed infrastructure — the provider handles uptime.
The Prop Firm Shift
Prop firms are moving to DXtrade, Match-Trader, and TradeLocker. EAs don't work on these platforms at all. Cloud copiers already support them.
When an EA Still Works
Local EAs can make sense for very specific use cases:
- Same-broker, same-platform copying — If you're copying between two MT4 accounts at the same broker, an EA is simple and fast.
- Custom logic — If you need highly customized copy rules (e.g., only copy during specific hours, apply custom lot calculations), a programmable EA gives you full control.
- Zero subscription cost — Some EAs are one-time purchases, while cloud copiers charge monthly.
The Verdict
For most traders today, cloud-based trade copiers are the better choice. The cost savings from eliminating VPS, the cross-platform support, and the reliability of managed infrastructure outweigh the flexibility of a local EA. Especially for prop firm traders who need DXtrade, Match-Trader, or TradeLocker support — cloud is the only option.
ConnectXCopy supports all 6 major platforms, runs 24/7 in the cloud, and eliminates VPS costs entirely. It's the architecture that modern copy trading requires.