What a Modern Exchange Platform Needs: A Guide for Emerging-Market Exchanges

Short answer: a modern exchange platform needs a matching engine with configurable sessions, auctions, price bands and halts; standards-based member connectivity; real-time market data; surveillance with full order replay; and clean links to clearing, settlement and the depository. For emerging-market exchanges it also has to bring the market along: technology for member brokers, market-maker programmes, cross-border links and room to list new instruments such as tokenised assets.

Exchanges in emerging markets are under pressure from several directions at once. Foreign investors expect the same order types, data and connectivity they use everywhere else. Regulators expect stronger surveillance and cleaner audit trails. Member firms, many of them small, need to keep pace without large technology budgets. And boards want new revenue from data, new listings and links to neighbouring markets. This guide sets out what a modern exchange platform needs to cover, and what to ask a technology vendor.

Matching and Market Models

The matching engine is the heart of the venue. Its job is deterministic, transparent price formation: the same orders in the same sequence must always produce the same trades, and every step must be auditable afterwards.

• Continuous trading: price-time priority matching, with partial fills and a full order and trade history.
• Auctions: opening, intraday and closing auctions, plus standalone auction sessions for events such as new listings, with indicative prices published while the auction builds.
• Trading sessions: pre-open, open, continuous, closing and post-close phases, with rules set per market, segment and instrument rather than hard-coded.
• Market controls: tick and lot sizes, trading hours, price bands, volatility interruptions and circuit breakers, together with halt, resume and instrument suspension controls for market operations.
• Order vocabulary: Market, Limit, Stop and Stop-Limit orders, IOC, GTC and GTD time in force, and auction orders, all governed by the market's own rules.

For a smaller or growing market, configurability matters as much as speed. Rules change as a market matures: bands widen, auctions are introduced, new segments open. Each change should be a rulebook setting, not a software release.

Member Connectivity

Members connect their own systems and, increasingly, those of their foreign clients. The platform should make that straightforward and controlled:

• Standard protocols: native FIX connectivity plus trading and market-data APIs, so members and their vendors use the interfaces they already know.
• Participant management: onboarding and configuration of trading participants, permissions by market, segment and instrument, and participant-level limits.
• Access governance: sponsored access and direct market access under the exchange's own rules, with drop-copy feeds that give members and the exchange an independent view of activity.
• Resilience: replay and recovery, so a member that disconnects can resume without losing messages.

Market Data Dissemination

Market data is both a public good and a revenue line. Every member, vendor and investor screen depends on it, so it has to be complete, timely and recoverable:

• Market-by-order and market-by-price feeds, with configurable depth of book.
• Real-time trade dissemination, official reference prices and auction results.
• Distribution over multicast, FIX and WebSocket, so both low-latency members and web applications are served.
• Snapshot and recovery, so a subscriber that misses messages can rebuild the book quickly.

Surveillance and Market Integrity

Investor confidence, and index providers' view of a market, depend on visible market integrity. Surveillance belongs inside the venue, working on the same orders and trades as the matching engine:

• Real-time monitoring across instruments, sessions and segments.
• Order-book surveillance covering depth, imbalance and behavioural patterns.
• Monitoring of price formation during auctions and the pre-open.
• Detection of spoofing, layering and other manipulation.
• Full order and trade replay for supervisory review, with configurable alerts, exception workflows and audit trails.

Clearing, Settlement and CSD Links

A trade is not finished when it matches. The exchange platform must hand every trade cleanly to the clearing house, the central securities depository and the custodians:

• Trade confirmations generated at the venue.
• Netting and allocation workflows, and interfaces for clearing and settlement systems.
• Compatibility with CCPs, CSDs and custodians, with SWIFT messaging for post-trade and settlement.
• Corporate actions that act on the positions the venue's trades created.

Where the exchange group also runs brokerage, custody or member services, there is a further benefit to running them on the same platform: a matched trade updates positions, cash, the ledger, fees and custody in one step, with no interface between the venue and the back office to build or reconcile.

Market Making

Liquidity is the constraint in many emerging markets. Market-maker programmes help, but only if obligations are clear, monitored and rewarded fairly. A modern platform lets the exchange set obligations by tiers of liquidity, covering spread, presence, volume and order size; track each market maker's presence and spread in real time; flag violations such as spread breaches or unequal two-sided quotes automatically; and calculate rebates from the obligations actually met, with reporting for the exchange and the regulator.

Cross-Border Links

Individual emerging markets are often small. Linking them gives investors a wider choice and gives member firms more to sell, without each exchange building bilateral connections to every other.

Tabadul Hub is an example. Launched in 2022 by the Abu Dhabi Securities Exchange, it is a digital exchange hub built on mutual market access, so investors can reach several markets through a single point of access. 11 exchanges and 100+ member firms trade through Tabadul Hub on ZagTrader technology, end to end: participant onboarding, trading and routing across connected markets, pre-trade controls, risk, post-trade processing, market-data and routing normalisation, and control panels for the hub to manage preferences across markets.

The lesson for other markets is that a cross-border link is not only a network connection. It needs common onboarding, consistent risk checks, normalised data and a post-trade path that works across every market in the link.

Technology for Member Brokers

An exchange is only as strong as its members. In many emerging markets, smaller brokers struggle to fund modern trading, risk and back-office systems on their own. Exchanges increasingly help by offering member services directly:

• A managed order management system for members: delivered by the exchange with direct market connectivity included, so a member can trade without building its own stack.
• Brokerage and back-office services: run by the exchange group for its own retail offering or for members.
• Market simulation: a market game and simulation environment where new investors and member staff learn to trade without risking money.

Digital Assets and New Instruments

Tokenised securities and other digital assets are arriving in emerging markets through regulatory sandboxes and new licensing regimes. The exchange platform should be able to list alternative and tokenised instruments within its existing market segments and rulebooks, so the same controls, surveillance and data apply. Operators building a dedicated digital-asset venue need the same matching engine alongside wallet custody, KYT and AML screening, and fiat and crypto funding.

Questions to Ask an Exchange Technology Vendor

• Which exchanges and market operators run on your technology today, and in which roles?
• Can session rules, auctions, bands and halts be changed by configuration per market, segment and instrument?
• How are members onboarded, permissioned and limited, and how is sponsored access governed?
• Which market-data formats and transports are supported, and how does recovery work?
• Can supervisors replay the full order book for any instrument and period?
• How do matched trades reach the CCP, the CSD and the custodians?
• Can you deliver technology to our members as well as to the exchange?

How ZagTrader Serves Exchanges

ZagTrader provides exchanges and market operators with a matching engine with sessions, auctions, market controls, surveillance and market data, on the same platform that runs brokerage, custody and the back office. Market infrastructure already runs on ZagTrader technology. Tabadul Hub connects 11 exchanges and 100+ member firms. Dubai Financial Market's iVestor brokerage and back office run on it, with a managed OMS delivered to members over ZagFN. The Abu Dhabi Securities Exchange uses it for market simulation and managed member connectivity, and Boursa Kuwait for market-making surveillance, reporting and simulation. ZagTrader connects to 25+ markets and exchanges and has been in production since 2009.

Related products: see Exchange Solutions for the matching engine and market operations, Market Making for liquidity programmes, Market Data, ZagFN for managed member connectivity, and Settlement for post-trade. Read how Tabadul Hub runs on ZagTrader technology, and see Digital Assets for tokenised instruments and digital-asset venues.